她仍然不喜欢那个手指甲很脏的女人。

She still did not like the woman who had dirty fingernails.

他的手指甲长得又长又硬。

His fingernails had grown long and horny.

手指甲底部的半月形苍白区域称为甲半月(lunula)。

The lunula is the half-moon shaped pale area at the bottom of finger nails.

不要在别人的视野里晃来晃去，也不要啃手指甲。

Shift not yourself in the sight of others, nor gnaw your nails.