Tian
(
天
)
Tian
(
天
)
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Vocabulary
HSK 6
Day 15
开夜车
New
开夜车
开夜车
開夜車
k
ā
i y
è
ch
ē
to burn the midnight oil, to pull an all-nighter
set phrase
Again
1
Hard
2
Good
3
Easy
4
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