stratum epithelium pigmentosum的用法和樣例：
例句
- In PRK, the top layer of the cornea, called the epithelium, is scraped away to expose the stromal layer underneat.
光性折射角膜切削術(shù)使用的方法是削去角膜的頂層，又稱(chēng)上皮層，來(lái)顯露下面的基質(zhì)層。 - Food particles in the mid gut are generally separated from the epithelium by membrane.
中腸中的食物顆粒，通常被粘膜所包圍，從而與上皮層分隔開(kāi)。
