preventing them from getting pregnant.從而避免懷孕
prevent from阻止; 防止
I was prevented from going by urgent business.
我因急事不能去。
I was prevented from going by urgent business.
我因急事不能去。
but women soon cottoned on to its real potential.不過(guò)女人們很快發(fā)現(xiàn)了它的真實(shí)作用
cotton on開(kāi)始理解
He didn't seem to cotton on to me then.
當(dāng)時(shí)他似乎并不喜歡我。
I don't cotton on to what you are saying.
我不明白你在說(shuō)什么。