Taivo A Taiwan Mandarin dictionary

不知所以

bùzhīsuǒyǐ

ㄅㄨˋ ㄓ ㄙㄨㄛˇ ㄧˇ

  1. 1(idiom) to not know the reason
  2. 2(idiom) to not know what to do

Keep 不知所以 and it comes back until you know it.

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