close up
phrasal verbclose up
when a wound closes up, it gets better as the skin, etc. joins together and goes back to normal 闭合： 伤口闭合时，随着皮肤等的结合而变得更好，恢复正常to hide your thoughts or emotions （使）靠拢，靠紧 She closed up when I asked about her family. 我问起她的家人时她避而不谈。 Peter turned away from him, his expression closing up. 彼得转过身去，他的表情越来越紧张。
close up | close something up
to shut and lock something such as a shop or a building, especially for a short period of time （尤指临时）关门停业，锁上门 Why don't we close up and go out for lunch? 我们何不关上门出去吃顿午饭？ Can the last one out close up the office? 最后离开的人把办公室锁上好吗？
to come closer together; to bring people or things closer together （使）靠拢，靠紧 to become narrower and less open 变狭窄