英语语法分析

The white spots on the fingernails, which can appear as dots or lines, are called leukonychia.

指甲上的白色斑点，有时会成点状或线状出现，这叫做白甲病。

Possibly because of the numerous calcium enriched nail strengtheners on the market, there is a widespread belief that calcium deficiency causes leukonychia.

也许因为市面上有很多卖加钙的指甲增强剂，所以很多人都认为缺钙会导致白甲病。