The skin of amphibians is permeable to water.两栖动物的皮肤是透水的。Most amphibians have caducous gills.大多数两栖类动物都有早落腮.Amphibians live partly in water and partly on land.两栖动物有时生活在水中,有时生活在陆上.Two amphibians ferry them out over the san...
The skin of amphibians is permeable to water.两栖动物的皮肤是透水的。Two amphibians ferry them out over the sands.两辆水陆两用车把他们渡过沙滩.Amphibians live partly in water and partly on land.两栖动物有时生活在水中,有时生活在陆上....