一根头发英文

不能hair不可数可以用a piece of hair表示

a drop of water a column of hair楼上的hair没单数形态

a piece of hair

a hair/one hair但我觉得直接用 one hair 比较好.

别听他们忽悠~~~当然可以了.When a hair is shed, a new hair from the same follicle replaces it and the grow-ing cycle starts again.a 根 of hair of yours is Enough~以上是例子证明可以!

一滴水－a drop of water.一根头发-a hair