In my countries,several laws have been passed to make noise less.
问题描述：
In my countries,several laws have been passed to make noise less.
有助于回答者给出准确的答案
特别是这里面的passed是什么意思?
答
在我的祖国,已通过数项用以减少噪音的法律
passed 是指已通过 have been passed 现在完成时