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夜不成眠
yèbùchéngmián
1. to be unable to sleep at night

Character Breakdown

夜
yè
night, dark; under cover of night
HSK 5 8 丶
不
bù
no, not, un-; negative prefix
HSK 1 4 丶
成
chéng
to accomplish; to become; to complete, to finish; to succeed
HSK 3 6 丶
眠
mián
sleep, shut-eye, hibernatation
HSK 5 10 丶

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Category
Chinese