epithelial membrane antigen(EMA)的用法和樣例：
例句
- These skin particles are groups of epithelial cells.
這些碎屑為皮膜細胞的集合體。 - This is a porous membrane because of the reason, to maintain cutting oil to reduce friction heat, to prevent wire into the attack surface effect.
此皮膜因是多孔質(zhì)的原故，能保持住切削油減少摩擦熱，有防止絲攻表面融著(zhù)的效果。
