| 单词 | 内折 |
| 释义 | 〔flap〕Either of the folded ends of a book jacket that fit inside the front and back covers.向内折的边：书籍护套折进封面或封底的折叠端的任一端〔inflexed〕Bent or curved inward or downward, as petals or sepals.内折的：向内或向下弯曲的，比如花瓣和花萼〔endocytosis〕A process of cellular ingestion by which the plasma membrane folds inward to bring substances into the cell.内噬作用：物质通过细胞厚浆膜向内折收的细胞吸摄过程而进入细胞 |
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