| 单词 | monotreme |
| 释义 | monotreme /monˈō-trēm/noun and adjective(relating to) a member of the Monotremata /mon-ō-trēˈmə-tə/, the lowest order of Mammalia, having a single opening for the genital and digestive organs ORIGIN: Gr monos single, alone, and trēma, -atos a hole monotreˈmatous adjective |
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