open up
动词- To open. · Some vacancies have opened up due to retirements.· Open up the door!
- To widen. · The corridor gradually opened up into a triangular room.
- To bring up (a topic etc.).
- To reveal (oneself); to share personal information about oneself; to become communicative. · After three hours of questioning, he finally opened up.
- To commence firing weapons. · As the convoy entered the pass, we opened up on them with everything we had.
- To rain. · The sky has really opened up. I've never seen this much rain!
- To berate; to begin shouting at or insulting someone or something. · As soon as she saw him, she just opened up!
- To begin running, driving, travelling, etc., at maximum (or faster) speed.
来自图书馆
Thick pine forests replaced the bare rock, and the wide valleys seemed to open up.
在真实文章中学习open up
注册免费账号后，在图书馆中把鼠标悬停在任何单词上即可看到意思，还能听朗读、收藏单词并按你的记忆安排复习，看到每本书你已经认识多少。