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"title": "具透 | watchOS 26 推出首个公测版,这些新功能值得尝鲜体验",
"description": "除了液态玻璃,watchOS 26 还带来了翻转手腕手势、更完备的控制中心、自动降低音量等功能。<a href=\"https://sspai.com/post/101397\" target=\"_blank\">查看全文</a>",
"content": "除了液态玻璃,watchOS 26 还带来了翻转手腕手势、更完备的控制中心、自动降低音量等功能。<a href=\"https://sspai.com/post/101397\" target=\"_blank\">查看全文</a>",
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"title": "派早报:微软 Edge 更新 Copilot 模式,索尼就游戏抄袭问题起诉腾讯等",
"description": "字节跳动扣子 Coze 宣布开源,通义灵码上线 Qwen3-Coder 等。<a href=\"https://sspai.com/post/101413\" target=\"_blank\">查看全文</a>",
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"title": "库克看了都沉默:用 Mac 触控板称西瓜,结果超出预期!|TrackWeight 实测",
"description": "你能想象用 MacBook 触控板来称重吗? TrackWeight 是一款刚刚上线的开源项目,它可以直接使用带有力度触控板的 MacBook 来称重,堪称最贵电子秤。@Appinn 先看视频 工作原 ",
"content": "\n<p>你能想象用 MacBook 触控板来称重吗?</p>\n\n\n\n<p><strong>TrackWeight</strong> 是一款刚刚上线的开源项目,它可以直接使用带有力度触控板的 MacBook 来称重,堪称最贵电子秤。@<a href=\"https://www.appinn.com/trackweight/\">Appinn</a></p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1608\" height=\"700\" src=\"https://do-cdn.appinn.com/static3/images/2025/07/Copy-of-appinn-homework-2025-07-22T164308.004.jpg\" alt=\"库克看了都沉默:用 Mac 触控板称西瓜,结果超出预期!|TrackWeight 实测 41\" class=\"wp-image-52904\" title=\"库克看了都沉默:用 Mac 触控板称西瓜,结果超出预期!|TrackWeight 实测 41\" srcset=\"https://do-cdn.appinn.com/static3/images/2025/07/Copy-of-appinn-homework-2025-07-22T164308.004.jpg 1608w, https://do-cdn.appinn.com/static3/images/2025/07/Copy-of-appinn-homework-2025-07-22T164308.004-768x334.jpg 768w, https://do-cdn.appinn.com/static3/images/2025/07/Copy-of-appinn-homework-2025-07-22T164308.004-1536x669.jpg 1536w, https://do-cdn.appinn.com/static3/images/2025/07/Copy-of-appinn-homework-2025-07-22T164308.004-804x350.jpg 804w\" sizes=\"(max-width: 1608px) 100vw, 1608px\" /></figure>\n\n\n\n<h2 class=\"wp-block-heading\">先看视频</h2>\n\n\n\n<div class=\"aspect-ratio\">\n<iframe src=\"//player.bilibili.com/player.html?isOutside=true&#038;aid=114895710325432&#038;bvid=BV1WEgJzMEK3&#038;cid=31204509515&#038;p=1&#038;autoplay=0\" scrolling=\"no\" border=\"0\" frameborder=\"no\" framespacing=\"0\" allowfullscreen=\"true\"></iframe>\n</div>\n\n\n\n<h2 class=\"wp-block-heading\">工作原理</h2>\n\n\n\n<p>TrackWeight 利用 <a href=\"https://github.com/Kyome22/OpenMultitouchSupport\" target=\"_blank\" rel=\"noopener\">Open Multi-Touch Support</a> 来获取 macOS 上所有鼠标和触控板事件的私密访问权限。该库提供了详细的触控数据,包括标准应用程序通常无法获取的<strong>压力读数</strong>。</p>\n\n\n\n<p>不过有个关键问题,仅当在触控板表面检测到电容时才会产生触控板压力事件,这意味着你的手指(或其他导电物体)必须与触控板接触。</p>\n\n\n\n<p>当满足此条件时,触控板的 Force Touch 传感器会提供精确的压力读数,可以校准并转换为重量测量值。</p>\n\n\n\n<p>精确到以克为单位。</p>\n\n\n\n<h2 class=\"wp-block-heading\">硬件要求</h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>macOS 13.0+ (用于兼容 Open Multi-Touch 支持库)</li>\n\n\n\n<li>配备 Force Touch 触控板的 MacBook (2015 年或更新的 MacBook Pro、2016 年或更新的 MacBook)</li>\n\n\n\n<li>应用程序沙盒已禁用 (低级触控板访问所需)</li>\n\n\n\n<li>Xcode 16.0+ 和 Swift 6.0+ (用于开发)</li>\n</ul>\n\n\n\n<h2 class=\"wp-block-heading\">如何使用</h2>\n\n\n\n<p>开发者并没有提供编译后的程序,需要在 Xcode 中编译,不过青小蛙编译了一个(未签名),一会放到搬运中,不想折腾 Xcode 的同学可以试试,但青小蛙也不确定是否可以运行成功。</p>\n\n\n\n<p>称重的时候,需要先轻轻的触摸触控板三秒钟,然后将物品放上去,等待测量,就好了。</p>\n\n\n\n<p>青小蛙的测试:</p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>牙签盒</strong>:触控板称 34 克,真实世界的电子秤称出 35 克</li>\n\n\n\n<li><strong>鸡蛋</strong>:触控板称 48 克,实际 53 克</li>\n\n\n\n<li>西瓜:触控板称 607 克,实际 623 克</li>\n</ul>\n\n\n\n<p>所以,可以称个大概,但完全不能替代真实世界的电子秤。</p>\n\n\n\n<h2 class=\"wp-block-heading\">获取</h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https://github.com/KrishKrosh/TrackWeight\" target=\"_blank\" rel=\"noopener\">GitHub</a></li>\n\n\n\n<li>搬运:<a href=\"https://pan.quark.cn/s/4b937249ebf5\" target=\"_blank\" rel=\"noopener\">夸克</a>|<a href=\"https://pan.baidu.com/s/1h0jYhDPag-6mv9m_Qfos2g?pwd=2xkb\" target=\"_blank\" rel=\"noopener\">百度</a>|<a href=\"https://url61.ctfile.com/f/15690961-1538272873-94e321?p=5712\" target=\"_blank\" rel=\"noopener\">城通</a> (访问密码: 5712)</li>\n</ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"/>\n\n\n\n<p>#<a href=\"https://www.appinn.com/tag/%e5%a5%bd%e5%83%8f%e6%9c%89%e7%82%b9%e7%94%a8/\" data-type=\"post_tag\" data-id=\"5922\">好像有点用</a></p>\n\n\n\n<p>原文:https://www.appinn.com/trackweight/</p>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading\">关注我们</h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>微博:<a href=\"https://weibo.com/appinncom\" target=\"_blank\" rel=\"noopener\">https://weibo.com/appinncom</a></li>\n\n\n\n<li>B站:<a href=\"https://space.bilibili.comLine truncated
"category": "macOS",
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"pubDate": "Tue, 22 Jul 2025 09:31:56 +0000",
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"title": "具透 | 新设计、桌面化……iPadOS 26 中你值得关注的新功能",
"description": "iPadOS 26 在对系统 UI 做了大幅度修改的同时,还强调对于多任务系统的改进及多平台功能的统一融合。<a href=\"https://sspai.com/post/101027\" target=\"_blank\">查看全文</a>",
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"title": "如果有一颗恒星,闯入太阳系,会造成什么后果?",
"description": "<div><img src=\"http://pic1.zhimg.com/v2-b17e917a72231652beb22861fe2a8bab_fhd.jpg?source=8673f162\" alt=\"头图\"/><div><div>\n<p>你知道离太阳最近的恒星是哪颗么?</p>\n<p>啥?三体那个比邻星?</p>\n<p>尼安德特人表示不同意。</p>\n<p>因为在大约 7 万年前,也就是早期智人决定走出非洲的那个时候,一颗叫舒尔茨之星(Scholz's Star)的恒星系统(一颗红矮星带着个褐矮星)真的闯进过太阳系,那时它们离地球只有 0.5~0.82 光年,比那个三体近多了。</p>\n<p>这个距离是什么概念呢?太阳系外围的奥尔特云,离太阳也有 1 光年。当时舒尔茨之星就是直接从奥尔特云中穿过去的。我们知道,奥尔特云里都是太阳系形成后的残存物质,是彗星们的老家。虽然它的距离比冥王星远百倍,但奥尔特云天体与太阳系的结合非常松散,这意味着一个非常小的引力就足以显着改变它们的轨道。舒尔茨之星的引力完全足以“踢乱”彗星的轨道了,从而使得一部分彗星冲到太阳系内部来。</p>\n<p>2018 年,天文学家研究了 339 颗轨道很特别的彗星(双曲线轨道,像是被甩进来的),发现有 36 个奥尔特云天体分布明显“过密”,往回推的话,都指向双子座那片天区——正好是 7 万年舒尔茨之星经过的地方,有过“亲密接触”,这些彗星受到的引力干扰偏移,就是那次相遇留下的“痕迹”。</p>\n<p>每当一颗恒星经过奥尔特云时,在接下来的几百万年里,我们与来自奥尔特云的来袭物体发生碰撞的风险就会增加。</p>\n<figure><img src=\"http://picx.zhimg.com/v2-c9ba63a296d7a1343b5317b1d2b9e180_720w.jpg?source=8673f162\" alt=\"\"></figure>\n<p><strong><strong>万一有颗恒星冲得更近呢?</strong></strong></p>\n<p>舒尔茨之星那次毕竟离得还不算近,还在冥王星之外好远的地方,影响的主要还是奥尔特云,对行星轨道没啥大影响。如果再近一些,闯到了海王星轨道以内(约 30 天文单位),那太阳系会怎么样呢?</p>\n<p>按照计算,大约每 30 万年,就会有一颗恒星距我们 1 光年以内;每十亿年,就会有一颗恒星出现在大约 1500 个天文单位的范围内<sup>[1]</sup>。 在这个距离内,即使是微小的引力变化,也会在宇宙时间尺度上导致灾难性的结果。</p>\n<p>除了会搅动奥尔特云和柯伊伯带、无数冰块会像雨点一样砸向内太阳系、导致地球被撞的风险暴增以外,还有更加危险的事情在等着小蓝星。</p>\n<p><strong>如果它冲进内太阳系,那么大灾难将降临。</strong></p>\n<figure><img src=\"http://picx.zhimg.com/v2-65a08a5cdf71d2e8e8a4444f4da58b3a_720w.jpg?source=8673f162\" alt=\"\"></figure>\n<p>这时,水星将成为地球生死存亡的关键因素。</p>\n<p>在新闯入的恒星的引力作用下,本来公转轨道就较扁的水星(偏心率 0.2),轨道会变得更扁<sup>[2]</sup>,甚至会与金星相撞,金星受撞击后,又会影响火星和地球,也有一定的可能有较大的碎片撞击地球。如果恒星引力再大些,也会直接导致几大行星被带偏,将地球推向太阳或木星。如果推向木星的话,木星的引力将像弹弓一样,将地球从太阳系中射出去,流~~浪。</p>\n<p><strong><strong>未来会再来一颗吗?</strong></strong></p>\n<p>天文学家预测,大约在 129 万~140 万年后,一颗红矮星 Gliese 710 将有 86%的概率会闯入奥尔特云,最近可能离太阳只有 0.166 光年(10,520 天文单位)。虽然不足以改变行星们的轨道,但它的质量大约是太阳的 60%,比舒尔茨之星(约 9%)重多了,而且比舒尔茨之星那次近了差不多 5 倍,它对奥尔特云的搅动强度可能会高出几十倍,界时可能会引发彗星暴,增加后续百万年的彗星撞击地球的风险。</p>\n<p><strong><strong>别慌,概率很低</strong></strong></p>\n<p>地球在太阳系几十亿年历史中被恒星“踢飞”的概率<strong>小于十亿分之一</strong>。</p>\n<p>因为太阳系的结构其实挺“安全”的。近处有月亮帮我们挡着,外层有木星等巨行星当“引力盾牌”,最外面还有广阔的奥尔特云当缓冲带保护内太阳系,大大降低了内太阳系被严重干扰的风险。真有一颗恒星近到闯入海王星轨道以内(足以威胁到地球)的概率,低到几乎不可能发生(小于十亿分之一)。</p>\n<p>可以说,虽然恒星邻居偶尔“路过”太阳系外围是银河系的常态,但真正威胁到地球的可能性微乎其微。</p>\n<p>今天的天文观测能力已经很强了。我们在夏威夷、智利山顶的大型望远镜,精度高到能测出恒星在天空中极其微小的移动(相当于从北京看清上海Line truncated
"content": "<div><img src=\"http://pic1.zhimg.com/v2-b17e917a72231652beb22861fe2a8bab_fhd.jpg?source=8673f162\" alt=\"头图\"/><div><div>\n<p>你知道离太阳最近的恒星是哪颗么?</p>\n<p>啥?三体那个比邻星?</p>\n<p>尼安德特人表示不同意。</p>\n<p>因为在大约 7 万年前,也就是早期智人决定走出非洲的那个时候,一颗叫舒尔茨之星(Scholz's Star)的恒星系统(一颗红矮星带着个褐矮星)真的闯进过太阳系,那时它们离地球只有 0.5~0.82 光年,比那个三体近多了。</p>\n<p>这个距离是什么概念呢?太阳系外围的奥尔特云,离太阳也有 1 光年。当时舒尔茨之星就是直接从奥尔特云中穿过去的。我们知道,奥尔特云里都是太阳系形成后的残存物质,是彗星们的老家。虽然它的距离比冥王星远百倍,但奥尔特云天体与太阳系的结合非常松散,这意味着一个非常小的引力就足以显着改变它们的轨道。舒尔茨之星的引力完全足以“踢乱”彗星的轨道了,从而使得一部分彗星冲到太阳系内部来。</p>\n<p>2018 年,天文学家研究了 339 颗轨道很特别的彗星(双曲线轨道,像是被甩进来的),发现有 36 个奥尔特云天体分布明显“过密”,往回推的话,都指向双子座那片天区——正好是 7 万年舒尔茨之星经过的地方,有过“亲密接触”,这些彗星受到的引力干扰偏移,就是那次相遇留下的“痕迹”。</p>\n<p>每当一颗恒星经过奥尔特云时,在接下来的几百万年里,我们与来自奥尔特云的来袭物体发生碰撞的风险就会增加。</p>\n<figure><img src=\"http://picx.zhimg.com/v2-c9ba63a296d7a1343b5317b1d2b9e180_720w.jpg?source=8673f162\" alt=\"\"></figure>\n<p><strong><strong>万一有颗恒星冲得更近呢?</strong></strong></p>\n<p>舒尔茨之星那次毕竟离得还不算近,还在冥王星之外好远的地方,影响的主要还是奥尔特云,对行星轨道没啥大影响。如果再近一些,闯到了海王星轨道以内(约 30 天文单位),那太阳系会怎么样呢?</p>\n<p>按照计算,大约每 30 万年,就会有一颗恒星距我们 1 光年以内;每十亿年,就会有一颗恒星出现在大约 1500 个天文单位的范围内<sup>[1]</sup>。 在这个距离内,即使是微小的引力变化,也会在宇宙时间尺度上导致灾难性的结果。</p>\n<p>除了会搅动奥尔特云和柯伊伯带、无数冰块会像雨点一样砸向内太阳系、导致地球被撞的风险暴增以外,还有更加危险的事情在等着小蓝星。</p>\n<p><strong>如果它冲进内太阳系,那么大灾难将降临。</strong></p>\n<figure><img src=\"http://picx.zhimg.com/v2-65a08a5cdf71d2e8e8a4444f4da58b3a_720w.jpg?source=8673f162\" alt=\"\"></figure>\n<p>这时,水星将成为地球生死存亡的关键因素。</p>\n<p>在新闯入的恒星的引力作用下,本来公转轨道就较扁的水星(偏心率 0.2),轨道会变得更扁<sup>[2]</sup>,甚至会与金星相撞,金星受撞击后,又会影响火星和地球,也有一定的可能有较大的碎片撞击地球。如果恒星引力再大些,也会直接导致几大行星被带偏,将地球推向太阳或木星。如果推向木星的话,木星的引力将像弹弓一样,将地球从太阳系中射出去,流~~浪。</p>\n<p><strong><strong>未来会再来一颗吗?</strong></strong></p>\n<p>天文学家预测,大约在 129 万~140 万年后,一颗红矮星 Gliese 710 将有 86%的概率会闯入奥尔特云,最近可能离太阳只有 0.166 光年(10,520 天文单位)。虽然不足以改变行星们的轨道,但它的质量大约是太阳的 60%,比舒尔茨之星(约 9%)重多了,而且比舒尔茨之星那次近了差不多 5 倍,它对奥尔特云的搅动强度可能会高出几十倍,界时可能会引发彗星暴,增加后续百万年的彗星撞击地球的风险。</p>\n<p><strong><strong>别慌,概率很低</strong></strong></p>\n<p>地球在太阳系几十亿年历史中被恒星“踢飞”的概率<strong>小于十亿分之一</strong>。</p>\n<p>因为太阳系的结构其实挺“安全”的。近处有月亮帮我们挡着,外层有木星等巨行星当“引力盾牌”,最外面还有广阔的奥尔特云当缓冲带保护内太阳系,大大降低了内太阳系被严重干扰的风险。真有一颗恒星近到闯入海王星轨道以内(足以威胁到地球)的概率,低到几乎不可能发生(小于十亿分之一)。</p>\n<p>可以说,虽然恒星邻居偶尔“路过”太阳系外围是银河系的常态,但真正威胁到地球的可能性微乎其微。</p>\n<p>今天的天文观测能力已经很强了。我们在夏威夷、智利山顶的大型望远镜,精度高到能测出恒星在天空中极其微小的移动(相当于从北京看清上海地面Line truncated
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"title": "为什么我们看到的星星总是一闪一闪的,而月亮却很少有这种现象呢?",
"description": "<div><img src=\"http://picx.zhimg.com/v2-40c67fc3986440312bb050675fb217f1_fhd.jpg?source=8673f162\" alt=\"头图\"/><div><div>\n<p>并不是因为月亮更亮,而是因为,月亮看上去足够大。</p>\n<p>小学老师告诉我们,星星闪烁,是因为它看上去很小,就像一个点一样,点光在经过大气层时,要经过一层层的不同密度和温度的空气,它们的折射率不同,再加上空气的流动(风)会让这不同层之间出现移动,所以星星的光会一直在不同的传播路径上变来变去。(家用望远镜看这些星星,都呈现出一个模糊、抖动且扭曲的光斑,而不是一个点。即使在“最晴朗”的夜晚,望远镜目镜中的星星也很少是静止的,就像是透过篝火去看对面的少女一般。)</p>\n<p>那光都是要经过大气层的,为什么行星就不闪烁了呢?</p>\n<p>这是因为,行星距离更近一点,所以看起来更大一些,就像一个小圆盘。圆盘由大量的点组成,虽然每个点仍然会闪烁,但这个不亮那个亮,从整体来看,亮度就被“平均”化了,因此看起来比较稳定。</p>\n<p>月亮是一个更大的圆盘,它是如此之大,是星星的上千倍,以至于你根本注意不到其中每一个光点的闪烁。只有当月亮(以及行星)出现在地平线附近时,更厚的大气层、地表的热气(温度梯度)变化才有可能让它变得晃动起来(这也是为什么世界知名的大望远镜都被装在高山之巅的原因之一)。</p>\n<p>当你拥有一个天文望远镜之后,你一定会先去观察月球上的那些坑,这时你就会观察到,它其实也是在抖动着的:</p>\n<figure><img src=\"http://picx.zhimg.com/v2-127335a0d9107a043ef5d94503812e97_720w.gif?source=8673f162\" alt=\"\"></figure>\n<p>同样的,金星在你的小型望远镜中会是这样的:</p>\n<figure><img src=\"http://pic1.zhimg.com/v2-cb99d144b40f1354d948739a4c0bde41_720w.gif?source=8673f162\" alt=\"\"></figure>\n<p>想当年,伟大的人形自走观天器、最后一位纯肉眼观星的天文学家第谷认为,星星闪烁是由于恒星绕自转轴快速旋转引起的,就像旋转的钻石在光线的照射下闪烁一样。我们现在知道,再伟大的人也会犯错误。</p>\n<p><strong>So easy?</strong></p>\n<p>好了,也许你会想,这太简单了,知乎平均 985,这点儿知识也能水一篇?</p>\n<p>那请下图,是亮度很接近的轩辕十四和火星的照片,当时它们在天空中离得很近,只相差 1.5 度<sup>[1]</sup>。摄影师在 10 秒长曝光的同时摆动相机镜头,产生了拖影。你是否能说出下面这幅图中,哪一个是恒星,哪一个是火星么?</p>\n<figure><img src=\"http://picx.zhimg.com/v2-676bf49a3b957e63a88fb57d9eccc783_720w.jpg?source=8673f162\" alt=\"\"><figcaption>图片来源和版权:Juergen Michelberger</figcaption></figure>\n<p>嗯,你猜的没错,左边彩色的是轩辕十四,右边的是火星的光影。</p>\n<p>至于轩辕十四呈现彩色的原因, 是由于空气湍流导致折射率的变化,不同颜色的光进入镜头的“概率”就会发生变化,产生幻彩一样的效果。而更近的火星更接近一个面光源。虽然圆盘很小,但它的光线要宽得多,因此,湍流的影响就会被“平均”掉,产生一个更稳定的颜色。</p>\n<p><strong>反向应用</strong></p>\n<p>再说点相关的吧。</p>\n<p>你是否有看过这样的照片?</p>\n<figure><img src=\"http://picx.zhimg.com/v2-9e7d1b5a8ff4fdf0829b7b595ff4977a_720w.jpg?source=8673f162\" alt=\"\"><figcaption>欧洲南方天文台甚大望远镜(VLT)的四部望远镜</figcaption></figure>\n<p>天文台这个黄色的激光是干什么的?</p>\n<p>前面说过,在天文观测中,地球大气层的湍流会对光线产生折射,导致星光的模糊。受此影响,地基光学望远镜的口径达到 0.4 米左右时(大气相干长度),再怎么增大口径,望远镜的实际分辨率也很难再提高太多了。</p>\n<p>那天文学家怎么解决光波在经过传输介质后发生的变形(波前畸变)呢?尤其是,这个波前畸变还是实时变化着的。</p>\n<p>现在比较流行的一个思路是,先找一颗(观测目标附近的)亮星作为导引星,用波前探测器探测,再实时反馈控制变形镜,补偿这个波前畸变(自适应光学)。也就是说,以导引星发出的光波为标准波前(称为信标),实现对被观测目标的高分辨成像。</p>\n<p>但不是每个星附近都有一颗亮星的。怎么办呢?</p>\n<p>我们知道,在海拨 80~105 千米高度的接近大气顶层的电离层中,有丰富的金属原子,其中钠原子的丰度高、而且能发出很强的钠 D2 荧光谱线。因此我们可以通过发射相应波长<sup>[2]</sup>的激光来激Line truncated
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"title": "进攻性叫牌与防守性叫牌——波兹南的牌局",
"description": "桥牌其实也一样,只不过桥牌的“进攻”和“防守”,有多重的意义,除了简单的在桥牌打法中表现为做庄与防守外,还有在叫牌中也分为自己抢过来打的“进攻性叫牌”和放给对方打或者叫得较低的“防守性叫牌”。",
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"title": "美国国家队名单出炉",
"description": "5月26日当地时间,美国国家队选拔赛老年团体赛2025年6月1日,美国桥牌协会(USBF)公布了参加2025年世界桥牌团体锦标赛的8支美国队参赛名单。由于美国选拔赛允许一名选手报名多项比赛,因此在选拔赛全部结束后,各个美国国家队进行了调整。",
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"title": "亚太赛每日一牌回顾:有趣的四红心",
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"title": "China urges U.S. to abandon excessive use of national security concept",
"description": "<div><div><p>BEIJING, June 5 (Xinhua) -- China has urged the United States to abandon its generalized and excessive use of the national security concept, and to collaborate with all parties in maintaining a rules-based multilateral trading system, the Ministry of Commerce said on Thursday.</p> <p>At a regular press conference, He Yongqian, spokesperson for the ministry, made the remarks when asked to comment on the U.S. decision to raise tariffs on imported steel, aluminium and their derivative products from 25 percent to 50 percent.</p> <p>He said that such U.S. moves not only harm others and itself, but also will severely disrupt the stability of global industrial and supply chains.</p> <p>The United States should abandon the zero-sum mentality, address respective concerns through equal dialogue, and jointly maintain the stability of global industrial and supply chains, He said. </p><p id='org_name'>Source: Xinhua</p></div></div>",
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"title": "自学python必看的书籍《Python编程:从入门到实践》",
"description": "内容简介本书是一本针对所有层次的Python 读者而作的Python 入门书。",
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"title": "自学python必看的书籍《Python编程:从入门到实践》PDF版拿走不谢",
"description": "内容简介本书是一本针对所有层次的Python 读者而作的Python 入门书。",