prevent sth. from happening 什么意思?

prevent sth. from happening 什么意思?
prevent sth. from happening 什么意思?

prevent sth. from happening 什么意思?
=stop sth.from happening/keep sth.from happening
阻止某事发生

阻止某事发生

阻止某事发生

阻止某事的发生