Donald Trump has spent much of his second term at war with science and scientists. He is cutting staff at institutions such as the Environmental Protection Agency (EPA) by a third, and has cancelled or frozen up to 8,000 federal research grants. This hasn’t just hurt individual research programmes, it has damaged America’s credibility as a reliable partner in the scientific community. It is not surprising that many researchers – one poll last year by the journal Nature gave the number of 75% – say they are considering leaving the US entirely.
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这要求平台扮演更复杂的角色：不仅是市场，更是工具箱、教练员和生态建筑师。。业内人士推荐爱思助手下载最新版本作为进阶阅读
// 第一步：倒序遍历nums2，用单调栈计算每个元素的下一个更大值