1PHRASAL VERB 坐起来;坐直 If you sit up, you move into a sitting position when you have been leaning back or lying down. 坐起来;坐直 [Also VERBPREPOSITION n (not pron)]
Her head spins dizzily as soon as she sits up. [VERBPREP.]
她一坐起身来就感到天旋地转。
2PHRASAL VERB 使…坐起身来;让…直起身子 If you sit someone up, you move them into a sitting position when they have been leaning back or lying down. 使…坐起身来;让…直起身子 [Also VERBPREPOSITION n (not pron)]
She sat him up and made him comfortable. [VERB noun PREP.]
她帮他坐起身来,好让他舒服一点。
3PHRASAL VERB 深夜未睡;熬夜 If you sit up, you do not go to bed although it is very late. 深夜未睡;熬夜
We sat up drinking and talking. [VERBPREP.]
我们饮酒谈天,直至深夜。
I didn't feel like sitting up all night. [VERBPREP.]
我不想熬通宵。
SYN stay up, stay awake, not go to bed
4PHRASAL VERB 突然关注;警觉 If something makes you sit up, it makes you suddenly pay attention to what is happening. 突然关注;警觉
A defeat like that makes you sit up and think. [VERBPREP.]
N-COUNT [usually plural]仰卧起坐Sit-ups are exercises that you do to strengthen your stomach muscles. They involve sitting up from a lying position while keeping your legs straight on the floor. 仰卧起坐
sit upADVERB➤abruptly, quickly, suddenly突然坐起來➤immediately立即坐直➤slowly慢慢坐起身◇She slowly sat up and looked around.她慢慢坐起來環顧四周。➤straight坐正PHRASES➤sit up and take notice (figurative) 關注起來;警覺起來◇Their actions have forced us to sit up and take notice.他們的行為迫使我們警覺起來。