博文
小孩子肚子里有虫需不需要打掉？（不是文字游戏？）
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刚刚在NPR上看到的：
"They're saying that there's a lack of evidence of benefit, not that there's evidence of a lack of benefit. And that's a critical distinction," Walson says.
So, it's "a lack of evidence of benefit" vs. "evidence of a lack of benefit."
文字游戏就是这么玩的！
https://m.sciencenet.cn/blog-306792-935491.html
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