英语语法分析

The eyeliner should be waterproof, as well as hypoallergenic if you have sensitive skin.

眼线笔应该是防水的，如果你有敏感的皮肤，也应该是防过敏的。

Another reason is that titanium is hypoallergenic.

另一个原因是，钛低变应原。

All of our Tungsten rings are Cobalt Free and hypoallergenic.

我们所有的钨钴环是免费和低过敏性。