up的短语辨析sign up

　　例句：

　　They should either monitor their websites better so that children do not sign up too early, or they should adjust their websites to the needs of younger users ．

　　他们要么更好地监控自己的网站,以免孩子过早注册,要么根据年轻用户的需要调整网站。

　　The pharmacist will make up your prescription.

　　药剂师会给你依处方配药。

　　Can you make up a foursome for tennis tomorrow?

　　你们明天能凑足四人打网球吗？

　　Stop shilly-shallying and make up your mind.

　　别犹豫了，拿主意吧。

　　It's now or never, so make up your mind

　　机不可失，下决心吧。