| 单词 | 袋状结构 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔pouch〕Zoology A saclike structure, such as the cheek pockets of the gopher or the external abdominal pocket in which marsupials carry their young.【动物学】 袋状结构：袋状结构，如地鼠的脸颊袋或袋鼠腹部外面的用来装其幼兽的袋子美国传统〔sac〕A pouch or pouchlike structure in a plant or an animal, sometimes filled with fluid.囊：动物或植物身上的小袋子或袋状结构，有时装有液体美国传统 |
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