【英语】你需要三个月换一次牙刷,用英语怎么说?
问题描述：
【英语】你需要三个月换一次牙刷,用英语怎么说?
应该用every three mouths?还是eighter three mouths?
答
你需要三个月换一次牙刷.
You need to change your toothbrush every three months.
every three months,每三个月一次.