It is probable that the nocturnal trades a way back in the ancestry of all mammals.

这种夜间的“交易”也许可以一直追溯到所有哺乳动物的祖先身上。

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Want observations describing the nocturnal behavior of the flying lemur?

想观看飞狐猴的夜间行为吗？

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The nocturnal animals hide in underwater caves by day, then venture out at night, feeding on small fish, squid, and octopus.

这种夜行性动物白天时隐藏在水底洞穴里，晚上才出来冒险，它们以小鱼、乌贼和章鱼为食。

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The passage through the nocturnal mammals is said to reduce the acidity and bitterness of the beans.

FORBES: The World's Most Expensive Comfort Foods

Too much of the second half is consumed by the nocturnal niceties of a drug plot a pity, because a film about the joys and travails of the American military abroad could hardly be more apposite.

NEWYORKER: Buffalo Soldiers

Digital manipulation emphasizes the placement and the posture of the figures just enough to give them a speaking presence, and the stormy sky of the first picture and the nocturnal cast of the second breathe poetry.

NEWYORKER: Flashes of Light