事实上，一些裸鳃亚目动物会从它们的食物中储存毒素，使得这种类似鼻涕虫的生物对捕食者来说是致命的。
Indeed, some nudibranchs store up toxins from their diet of poisonous sponges, making the slug-like creatures themselves deadly to predators.
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.
皱鳃鲨可以称得上是活化石了，在外形上还保留着许多它生活在恐龙时代海洋中的先祖的特征。
Considered living fossils, frilled sharks bear many physical characteristics of ancestors who swam the seas in the time of the dinosaurs.
应用推荐