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单词 sit-up
释义

sit-up

1 of 2

noun

ˈsit-ˌəp How to pronounce sit-up (audio)
: a conditioning exercise performed from a supine position by raising the torso to a sitting position and returning to the original position without using the arms or lifting the feet

sit up

2 of 2

verb

sat up; sitting up; sits up

intransitive verb

1
a
: to rise from a lying to a sitting position
b
: to sit with the back erect
2
: to show interest, alertness, or surprise
sit up and take notice
3
: to stay up after the usual time for going to bed

Word History

First Known Use

Noun

1900, in the meaning defined above

Verb

13th century, in the meaning defined at sense 1a

Kids Definition

sit-up

noun

ˈsit-ˌəp
: an exercise done by lying on the back and rising to a sitting position
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更新时间:2024/12/23 22:32:19