1 to stay awake and not go to bed although it is late -- 遲睡，熬夜
[ + -ing verb ] The book was so interesting that I sat up all night reading it. 這本書太有趣了，我讀了一整夜。
I'll be late tonight, so don't sit up for (= wait for) me. 今晚我回來會很晚，所以不要熬夜等我。
3 a type of exercise in which someone sits up from a lying position, designed to make the abdominal muscles stronger -- 仰臥起坐
One was the drop-handled, racing variety and the other was the sit-up-and-beg variety.
For the purposes of promotion, a soldier's score on an alternate event equals the average of their push-up and sit-up scores.
If a repetition does not count, the scorer will repeat the number of your last correctly performed sit-up.
A penny sit-up was the cheapest homeless shelter at that time.
The sit-up exercise can be replaced with the more modern crunch.
Many exercise physiologists consider the sit-up in the higher levels to be capable of causing spinal injury, and, therefore, unsuitable for an unsupervised program.
Movements such as the push-up, the pull-up, and the sit-up are some of the most common bodyweight exercises.
It was like a penny sit-up except that a rope was placed in front of the bench.
中文简体
坐直, 保持清醒, 迟睡，熬夜…
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incorporarse, sentarse recto/ta…
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sentar-se…
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（寝た状態から）体を起こして座る, 起き直る…
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doğrulup/dikilip oturmak, geç vakte kadar yatmadan/uyumadan oturmak…
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se redresser, abdos, s’asseoir bien droit…
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incorporar-se…
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يَجْلِس مُنْتَصِبًا…
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