Taivo A Taiwan Mandarin dictionary

卓有成效

zhuóyǒuchéngxiào

ㄓㄨㄛˊ ㄧㄡˇ ㄔㄥˊ ㄒㄧㄠˋ

  1. 1highly effective
  2. 2fruitful

Keep 卓有成效 and it comes back until you know it.

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