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