sit up是什么意思中文

你好!sit up 英[sit ʌp] 美[sit ʌp] [词典] 熬夜; （使） 端坐; 晚睡; <口>引起注意; [例句]Her head spins dizzily as soon as she sits up.她一坐起身来就感到天旋地转。