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Jyutping sai3 kwan2 zin3
Pinyin xì jùn zhàn

Definitions (Wiktionary)
  1. noun
    biological warfare; germ warfare

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Jyutping sai3 kwan2 zin3
Pinyin xì jūn zhàn

Definitions (CC-CEDICT)
  1. biological warfare; germ warfare
Definitions (Wiktionary)
  1. noun
    biological warfare; germ warfare