study up

• • 用功准备考试：

    He can't go with you; he has to study up tonight.

    他不能和你去玩了，他今晚得用功应付考试了。

  • [口语](为…目的而)专门阅读(或攻读)，钻研：

    Yes, I know. I'd studied it up in a book.

    是的，我知道，我在一本书里专门查阅过。

    to have studied up the lives on other globes

    对其他星球的生命问题做过专门的调研