hair/heə(r)/
n.1. 毛;毛线The cat has left her loose hairs all over the ground of the house.猫身上脱落的毛在屋子里洒得满地都是。
to find a hair in one's soup在汤里发现一根毛线
2. 头发Your hair has grown very long. Go and have your hair cut.你的头发很长了,去理个发吧。
to cut one's hair理发
3. 毛状物4. 细微;极微to win by hair险胜