n. hair of the dog;hair of the dog that bit you：解醉酒；解酒液
the New Year's Day hair of the dog
n. let your hair down：彻底放松；尽情享受
the world-famous Oktoberfest, a time when everyone in Munich really lets their hair down
n. make sb's hair stand on end：使某人毛骨悚然
This was the kind of music that made your hair stand on end.
n. not a hair out of place：一丝不乱；衣冠整洁
She had a lot of make-up on and not a hair out of place.
n. not turn a hair：面不改色；泰然自若
No one seems to turn a hair at the thought of the divorced Princess marrying.
n. split hairs：吹毛求疵
Don't split hairs. You know what I'm getting at.
a girl with long blonde hair
He's losing his hair.
The majority of men have hair on their chest.
I am allergic to cat hair.
I want to do my hair if we're going out.
I need to get my hair done again.
dog hairs on the carpet
She had her first grey hairs at twenty-five.
black hairs on the back of his hands
The stinging nettle has a square stem and little hairs.
n. get in sb's hair：（不断）惹恼某人，烦扰某人
n. keep your hair on!：保持镇静！