常見(jiàn)例句the most primitive mammals comprising the only extant members of the subclass Prototheria. 最原始的哺乳動(dòng)物，組成原獸亞綱唯一的現(xiàn)存種類。the most primitive mammals comprising the only extant members of the subclass Prototheria 最原始的哺乳動(dòng)物，組成原獸亞綱唯一的現(xiàn)存種類primary mammal (Prototheria) 原獸亞綱 返回 Prototheria