1795年，德国语文学家弗里德里希·奥古斯特·沃尔夫首次提出，荷马的作品不仅不是荷马亲笔写下的，甚至也不是荷马本人亲自创作的。

In 1795, the German philologist Friedrich August Wolf argued for the first time that not only were Homer's works not written down by Homer, but they weren't even by Homer.

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科学家首次提出这个问题是在20世纪90年代中期。当时，研究人员偶然发现一种化学药剂，这种药剂在啮齿动物身上似乎可以发挥和热量限制相同的正面效果。

Scientists first posed this question in the mid-1990s, after researchers came upon a chemical agent that in rodents seemed to reproduce many of caloric restriction's benefits.

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当米兰科维奇在20世纪20年代首次提出这个理论时，他的许多同事都持怀疑态度。

Now, when Milankovitch first proposed this theory in the 1920s, many of his colleagues were skeptical.

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