她的头发在阳光下闪闪发光。

Her ___hair shines in the sunlight.

他差点就赢了比赛，但还是以毫厘之差输了。

He almost won the race, but lost by a ___hair.

仙人掌上的细毛很容易扎到手指。

The tiny ___hairs on a cactus can easily poke your fingers.