探险家罗伊·查普曼·安德鲁斯当时认为，鲸鱼一定是一种返祖的陆地生物。

Explorer Roy Chapman Andrews argued at the time that the whale must be a throwback to a land-living ancestor.

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潘克塞普曾对老鼠进行了相关研究，他发现，当老鼠玩耍的时候，他们经常发出一种唧唧喳喳很尖的声音——根据科学家表示，这是笑的一种原始形态。

Panksepp has studied rats and found that when they play, they often chirp—a primitive form of laughter, according to the scientist.

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当普卢塔克认为一个批评家应该能够创作出“一个更好的作品”时，有两种方式可以解释他的这一观点。

There are two ways to interpret Plutarch when he thinks that a critic should be able to produce "a better in its place".

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