hair line

例句：

1. 1. The hairline on her forehead isreceding.
   她额头上的发际线正在后退。
2. 2. She combed her hairwith a comb line.
   她用梳子梳了一根发际线。
3. 3. Herhairline has started to show signs ofaging.
   她的发际线开始显示出衰老的迹象。