英语语法分析

This is what we often say nasal blackhead.

这个就是我们常说的鼻部黑头。

Better effect together with blackhead-educing essence.

配合黑头导出精华效果更佳。

When these pores become blocked a whitehead or blackhead may develop.

当毛孔被阻塞的情况下，就可能产生粟粒疹或黑头粉刺。