单孔类动物
Monotreme \Mon"o*treme\, n. [Cf. F. monotr[`e]me.] (Zo["o]l.) One of the Monotremata.
monotreme n : the most primitive mammals comprising the only extant members of the subclass Prototheria [syn: {egg-laying mammal}]
版权所有 © 2024 3Dict.cn