看美剧学英语高频短语：Sit up

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Sit up: To stay up after the usual time for going to bed; If you sit up, you move into a sitting position when you have been leaning back or lying down; If you sit up, you do not go to bed although it is very late; If something makes you sit up, it makes you suddenly pay attention to what is happening.
As in We sat up drinking and talking.

中文释义：sit up 有多种意思：1、坐起来;坐直；如果你坐起来，当你向后倾斜或者躺下的时候，你会变成坐着的姿势。2、熬夜，晚睡；表示很晚了，还坐着不去睡觉。比如：Sometimes I sit up reading until three or four in the morning.(有时我熬夜读书直到凌晨三四点。) 3、突然坐直，如果有什么东西让你坐起来，那一定是它让你突然注意到发生了什么。