| 释义 |
〔marsupium〕An external pouch or fold on the abdomen of most female marsupials, containing the mammary glands and in which the young continue to develop after leaving the uterus.育儿袋：大多数有袋目动物母亲腹前的袋子，内有乳腺，幼仔在离开子宫后在里面继续生长发育〔udder〕A baglike organ containing the mammary glands, characteristic of certain female mammals, such as cows, sheep, and goats.乳房：含有乳腺的袋状器官，是某些雌性哺乳动物的特征，如乳牛、绵羊和山羊 |