| 释义 |
两栖动物liǎngqī dòngwù脊椎动物的一纲,通常没有鳞或甲,皮肤没有毛,四肢有趾,没有爪,体温随着气温的高低而改变,卵生。幼时生活在水中,用鳃呼吸,长大时可以生活在陆地上,用肺和皮肤呼吸,如青蛙、蟾蜍、蝾螈等。{amphibious animal; amphibian; a class of oviparous vertebrates, usu. having no scales, no shells and no hair on the skin, the limbs having toes but no claws, their body temperature changing with the rise and fall of the temperature. When they are young, they live in water and breathe with gills. After growing up, they live either in water or on land and breathe with lung and skin, such as frog, toad, salamander, etc.} |