单词：amphibians
n. an airplane designed to take off and land on water
n. cold-blooded vertebrate typically living on land but breeding in water; aquatic larvae undergo metamorphosis into adult form
amphibians的用法和样例：
例句
- The skin of amphibians is permeable to water.两栖动物的皮肤是透水的。
- In reptiles, birds, amphibians and insects the term egg refers to a fertilized ovum with protective and nutritive tissues.而在爬虫类，鸟，两栖动物与昆虫，卵是指受精之后的合子。
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