sign up for

• 登记注册, 登记报名

sign up for的用法和样例：

例句

1. The famous film star signed up for a new film production.
   那位著名影星已签约参加拍摄一部新片。
2. Many men sign up for the army because they can not get ordinary jobs.
   由于找不到工作，许我男人都报名参了军。