hairlines/ˈher.laɪn/形容词（裂缝或线）非常细的a hairline fracture很细的裂缝/ˈher.laɪn/名词（尤指人前额处的）发际线He's got a receding hairline (= he's losing his hair at the front of the head).他的额头开始秃了。想跟读，去练习
