Taivo A Taiwan Mandarin dictionary

四害

sìhài

ㄙˋ ㄏㄞˋ

  1. 1"the four pests", i.e. rats, flies, mosquitoes, and sparrows
  2. 2see also 打麻雀運動|打麻雀运动[Da3 Ma2 que4 Yun4 dong4]

Keep 四害 and it comes back until you know it.

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