epithelial lining的用法和樣例：
例句
- Many of the epithelial cells at the interface with the outside world are mucosal epithelial cells which secrete mucus.
很多位於與外接相通的接觸面上的上皮細胞是粘膜上皮細胞，它們能分泌粘液。 - The vast majority of lung cancer originated in bronchial epithelium, but there are a few cancer in alveolar epithelial origin or bronchial glands.
絕大多數肺癌起源於支氣管粘膜上皮，但亦有少數癌腫起源於肺泡上皮或支氣管腺體。
