这个词是什么意思？
New World marsupials of the family Didelphidae. Opossums are omnivorous, largely nocturnal and arboreal MAMMALS, grow to about three feet in length, including the scaly prehensile tail, and have an abdominal pouch in which the young are carried at birth.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D009893 · MeSH 2026。
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