1、wrap (it) up
通常用於祈使句) 安静; 住嘴.
2、wrap (sb/oneself) up
给（某人[自己]）穿上暖和的衣物:
Wrap up warm(ly)! It's very cold outside. 穿暖和点! 外面很冷.
3、wrap sth up
完成（任务）; 进行完（讨论）; 签订完（协议）: The salesman had already wrapped up a couple of deals by lunch-time. 那个售货员在午饭前已经做完了几笔生意.
4、wrap sth up (in sth)
（用晦涩的或多余的词语）使（说的话）费解: Why does he have to wrap it all up in such complicated language? 他为什麽非得用这麽艰深的语言说话呢?
从上述4个固定搭配，可以：
wrap up time 翻译成：结束时间/结束任务