sit up late

例句：

1. 1.I stayed up late last night because I couldn't fall asleep.
   我昨晚熬夜了，因为我睡不着。
2. 2. She stayed up late to finish her homework before the exam.
   她熬夜完成作业，以便在考试前做好准备。
3. 3.He stayed up late to watch the game live on TV.
   他熬夜看比赛直播。