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Jyutping ngai6 jam1 sing3
Pinyin wèi yīn xìng

Definitions (Wiktionary)
  1. noun
    false negative
    (syn.) 假陰性, 假阴性

偽陰性 [伪阴-]

Jyutping
Pinyin wěi yīn xìng

Definitions (CC-CEDICT)
  1. false negative