英语语法分析

The reserve cells of these epithelia are the cuboidal, non-ciliated Clara cells.

这些上皮细胞的储备细胞是长方体，非纤毛的克拉拉细胞。

The superficial epithelia cells do not bind the active ingredient and thus only serve as a transit area.

浅表的上皮细胞并不与活性药物成分结合，因而只是运输区。

Conclusion: the stability of tear film decreases and the epithelia of cornea and conjunctiva destructs in diabetic patients.

结论：糖尿病患者泪膜稳定性下降，角、结膜上皮损害。