The good relationships between the structure of fish gills and their function were discussed.

本文还讨论了剑尾鱼鳃结构与其功能的密切关系。

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The boy and his father looked at the handsome fish gills playing back and forth in the moonlight.

男孩儿和他父亲看着这条漂亮的鱼，它的鱼鳃在月光下一张一翕。

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Fish take in oxygen through their gills.

鱼用鳃吸取氧气。

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Today, I am still amazed that the gills of a fish can get enough oxygen out of the water to live.

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He noticed that the fish had a dime-sized black dot just under its gills, like a beauty mark.

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