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1·Fish take in oxygen through their gills.

鱼用鳃吸取氧气。《牛津词典》

2·Both fish and tadpoles have gills.

鱼和蝌蚪都有鳃。

3·You won't ever find feathers on a mammal or gills on a primate.

你在哺乳动物身上找不到羽毛，在灵长类动物身上找不到腮。

4·The gills of fishes are analogous to the lungs in terrestrial animals.

鱼类的鳃与陆上动物的肺类似。《新英汉大辞典》

5·The behemoths are indeed sharks. They breathe through gills, like fish.

事实上，这些庞然大物确实是鲨鱼。它们通过鳃呼吸，就像鱼一样。

6·The behemoths are indeed sharks. They breathe through gills, like fish.

事实上，这些庞然大物确实是鲨鱼。它们通过鳃呼吸，就像鱼一样。

7·Because they are always swimming, tunas simply have to open their mouths, and water is forced in and over their gills.

因为它们总是在游泳，所以金枪鱼只需要张开嘴巴，水就会被强行灌进它们的鳃里。

8·Indeed, the world's 37 species of seahorse are fish, breathing through gills and using a swim bladder to control their buoyancy.

事实上，世界上有37种海马是鱼，它们通过鳃呼吸，用鱼鳔来控制浮力。

9·They do, however, still breathe air, having never developed anything equivalent to the gills of their earlier marine incarnation.

然而，他们虽然仍呼吸着空气，却从未进化出类似于腮这种早期海洋生物的器官。

10·I was stuffed to the gills with chocolate cake.

我吃巧克力蛋糕都撑到嗓子眼儿了。《牛津词典》

(1)to the gills[口语]完全地，彻底地，充分地

(1)fed to the gills[美国俚语]感到厌烦

(1)gill net刺网