outer layer的用法和樣例：
例句
- Having a cortex or a similar specialized outer layer.
有皮的有皮的或具有相似的專門發育的外部覆蓋的 - An outer layer or coating applied to a surface for protection or decoration.
飾面，保護面裝在外面的外層或薄層，為了保護或裝飾 - The outer layer of an internal organ or body structure, as of the kidney or adrenal gland.
皮層內部器官或身體結構的外層，如腎或腎上腺皮層
