牛奶、油性鱼类和鸡蛋全都含维他命D。
百慕大周围的海域中到处都是五彩的珊瑚虫和奇异的鱼类。
The seas around Bermuda are full of colourful corals and fantastic fish.
鲸不是鱼类，而是哺乳类植物。
想想鱼类和贝类所生活的环境。
在这种情况下，鱼类是团体活动的。
鱼类的鳃与陆上动物的肺类似。
The gills of fishes are analogous to the lungs in terrestrial animals.
鱼类和海鸟错把塑料当作食物而呛死。
Fish and seabirds mistake plastic for food and choke to death.
其中鱼类蛋白最好。
我正在帮助研究珊瑚和生活在珊瑚礁周围的鱼类。
I'm helping to do research on the coral and the fish that live around the reefs.
鲨鱼以什么为食，主要是鱼类和其他小型海洋动物？
What do sharks feed on, mainly fish and other small sea animals?
昆虫、鸟类和鱼类往往是人类感到最没有亲切感的生物。
Insects, birds arid fish tend to be the creatures that humans feel furthest from.
然后这只鱼吃了这些海藻，或者吃其它吃了这些植物的鱼类。
Then the fish eats the algae or eat other fish that have eaten those plants.
这种划分为鱼类和其他海洋物种的分区物种形成奠定了基础。
This division set the stage for allopatric speciation among populations of fishes and other marine species.
海洋鱼类中的汞含量也很高——尤其在体型较大的鱼类体内，如鲨鱼、金枪鱼和旗鱼。
Mercury levels are high in marine fish, too—particularly in larger species, such as shark, tuna, and swordfish.
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