hairs
Your hair is the fine threads that grow in a mass on your head.
I wash my hair every night.
我每天晚上都洗头。
I get some grey hairs but I pull them out.
我长了几根白头发,但我把它们拔掉了。
Hair is the short, fine threads that grow on different parts of your body.
The majority of men have hair on their chest.
大多数男人长有胸毛。
Hair is the threads that cover the body of an animal such as a dog, or make up a horse's mane and tail.
I am allergic to cat hair.
我对猫毛过敏。
let your hair down
If you let your hair down, you relax completely and enjoy yourself.
the world-famous Oktoberfest, a time when everyone in Munich really lets their hair down.
世界著名的啤酒节,一个让身在慕尼黑的每个人彻底放松的节日。
make your hair stand on end
Something that makes your hair stand on end shocks or frightens you very much.
This was the kind of smile that made your hair stand on end.
这是那种使人毛骨悚然的微笑。
not a hair out of place
If you say that someone has not a hair out of place, you are emphasizing that they are extremely neat and well dressed.
She had a lot of makeup on and not a hair out of place.
她浓妆艳抹,穿着异常精致。
split hairs
If you say that someone is splitting hairs, you mean that they are making unnecessary distinctions between things when the differences between them are so small they are not important.
quibble
Don't split hairs. You know what I'm getting at.
不要钻牛角尖。你知道我是什么意思。