英汉词典

1. 头发
    Your hair is the fine threads that grow in a mass on your head.

    e.g. I wash my hair every night...
           我每晚都洗头。
    e.g. He has black hair.
           他一头乌发。

2. 毛发;汗毛;体毛
    Hair is the short, fine threads that grow on different parts of your body.

    e.g. The majority of men have hair on their chest...
           大多数男子长有胸毛。
    e.g. It tickled the hairs on the back of my neck.
           它挠得我后脖梗儿的绒毛直痒痒。

3. （动物的）毛;（马的）鬃，鬣
    Hair is the threads that cover the body of an animal such as a dog, or make up a horse's mane and tail.

    e.g. I am allergic to cat hair.
           我对猫毛过敏。
    e.g. ...dog hairs on the carpet.
           地毯上的狗毛

4. （昆虫、植物上的）茸毛
    Hairs are short, very fine threads that grow on some insects and plants.

    e.g. The stinging nettle has a square stem and little hairs.
           荨麻长有四方茎和细小茸毛。