| 释义 |
pro·to·the·ria AHD..thirēə
基本英英例句
原哺乳亚纲¹⁰⁰
Noun:
echidnas; platypusthe most primitive mammals comprising the only extant members of the subclassPrototheria.最原始的哺乳动物，组成原兽亚纲唯一的现存种类。
the most primitive mammals comprising the only extant members of the subclassPrototheria最原始的哺乳动物，组成原兽亚纲唯一的现存种类 |