wools
Wool is the hair that grows on sheep and on some other animals.
A new invention means sheep do not have to be sheared–the wool just falls off.
一项新的发明意味着羊不必被剪毛–羊毛会自动脱落下来。
Wool is a material made from animal's wool that is used to make things such as clothes, blankets, and carpets.
a wool overcoat.
一件毛料大衣。