鸟类的祖先很可能是一种具鳞的小型四足爬行动物，生活在森林的树冠上，经常从一棵树跳到另一棵树上。
Imagine the ancestors of birds as small, scaly, four-legged reptiles living in forest canopies, leaping from tree to tree.
海洋拥有巨量的叫做鳞虾的小型动物。
The ocean contains huge amounts of tiny sea - animals called krill.
海洋拥有巨量的叫做鳞虾的小型动物。
The ocean contains huge amounts of tiny sea-animals called krill.
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