单语范例（未经PONS编辑处理）
The archosaurs were characterized by elongated hind legs and an erect pose, the early forms looking somewhat like long-legged crocodiles.
en.wikipedia.org Sharks, dolphins, crocodiles and an extraordinary diversity of fish species make the islands reefs their home.
en.wikipedia.org Crocodiles are also commonly found in local rivers.
en.wikipedia.org It is also a remaining source of freshwater crocodiles and origin of many rivers and streams.
en.wikipedia.org Crocodiles have relatively larger brains and show a fairly complex social structure.
en.wikipedia.org