Marine mammals generally swim with the current.

海洋哺乳动物一般顺水而游。

《牛津词典》

She says it's very worrisome to see such a large number of marine mammals die.

她说如此大数目的海洋动物死亡现象令人担忧。

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LARGE sharks, such as the Great White and Tiger, generally prey on big Marine mammals.

体型较大的鲨鱼，比如大白鲨和虎鲨，一般以大个头的海洋哺乳动物为食。

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During their six-week voyage, researchers will employ a range of techniques to unlock some of the secrets of the giant marine mammals.

VOA: standard.2010.01.05

But about 15 years ago, we knew virtually nothing of the diving behaviour of marine mammals.

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In this context, harvesting of the more abundant marine mammals takes on a real economic significance.

ECONOMIST: Greater Europe

An estimated 100, 000 marine mammals are killed each year by plastic in the ocean.

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