monotremes 📖 中文释义 (monotreme 的复数) n. 单孔目动物[医] 单孔类 🧩 词形变化 原形 monotreme 📘 English Definition(英文释义) plural of monotremen. the most primitive mammals comprising the only extant members of the subclass Prototheria ← monotreme M 字母词表 Monotricha →