amphibian

/æmˈfɪbiən/

a flat-bottomed motor vehicle that can travel on land or water

中文释义：水陆两用车；两栖动物

The military uses amphibian vehicles to cross rivers during operations.

军方在行动中使用水陆两用车渡河。

Frogs are amphibians that can live both in water and on land.

青蛙是既能在水中也能在陆地上生活的两栖动物。