克雷奇仍然认为古印度安人在灭绝上的责任即使不是主要的，也是次要的，他认为人类在其他地方造成了当地物种灭绝。

Still, Krech attributes secondary if not primary responsibility for the extinctions to the Paleoindians, arguing that humans have produced local extinctions elsewhere.

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克雷布斯发现，大蓝鹭在较小的群体中比在较大的群体中更容易抬头，这完全是由于恶劣的饲养条件造成的。

Krebs has discovered that great blue herons look up more often when in smaller flocks than when in larger ones, solely as a consequence of poor feeding conditions.

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科技行业的一些先驱，最著名的是企业家埃隆·马斯克，也表达了他们对超级人工智能可能对人类造成的伤害的担忧。

A number of pioneers from the technology industry, most famously the entrepreneur Elon Musk, have also expressed their concerns about the damage that a super-intelligent AI could do to humanity.

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For the first time"--this was, of course, the French aristocrat de Tocqueville "For the first time we have had the chance to examine the effect that slavery produces on a society.

第一次",这位托克维尔即是,法国的那位贵族德·托克维尔,"第一次我们有机会仔细观察,奴隶制对一个社会造成的影响

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