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不知何故
bùzhīhégù
1. somehow

Character Breakdown

不
bù
no, not, un-; negative prefix
HSK 1 4 丶
知
zhī
to know, to perceive, to comprehend
HSK 2 8 丶
何
hé
what, why, where, which, how
HSK 4 7 丶
故
gù
reason, cause; happening, instance
HSK 3 9 丶

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