复数： hairlines

Did you get the crease under the hairline ?

发际下面的皱纹弄到没有?

I see you both got the sheehan hairline .

你们的发际线都很高。

All three victims had hairline fractures .

三个受害者都有轻微的骨折。

The trouble , of course , is that the hairline cracks in a person sometimes start to show and spread .

当然，这样做的麻烦是：一个人心底里细若发丝的裂痕，有时会逐步显露，并且扩张开来。

A manufacturing defect means the hair produced is so small it appears invisible to the naked eye , giving the classic bald spot or receding hairline .

这种生长的缺陷就意味着长出来的头发太小无法用肉眼看到，造成了秃点或者发际线的后退。