单词：outer layer
outer layer的用法和样例：
例句
- Having a cortex or a similar specialized outer layer.有皮的有皮的或具有相似的专门发育的外部覆盖的
- An outer layer or coating applied to a surface for protection or decoration.饰面，保护面装在外面的外层或薄层，为了保护或装饰
- The outer layer of an internal organ or body structure, as of the kidney or adrenal gland.皮层内部器官或身体结构的外层，如肾或肾上腺皮层
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