This wool comes from goats, not sheep.

这种羊毛是山羊毛，不是绵羊毛。

《牛津词典》

They can see sheep getting their wool cut and they can learn how that wool is made into clothing.

他们可以看到剪绵羊毛，并学习羊毛是如何制成衣服的。

youdao

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–羊毛就会脱落下来。

《柯林斯英汉双解大词典》