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  1. insidious

    • IPA[inˈsidēəs]

    美式

    • adj.
      proceeding in a gradual, subtle way, but with harmful effects;treacherous; crafty
    • 釋義

    形容詞

    • 1. proceeding in a gradual, subtle way, but with harmful effects sexually transmitted diseases can be insidious and sometimes without symptoms
    • treacherous; crafty tangible proof of an insidious alliance
    • 更多解釋
    • IPA[ɪnˈsɪdɪəs]

    英式

    • adj.
      proceeding in a gradual, subtle way, but with very harmful effects: sexual harassment is a serious and insidious problem

    Oxford Dictionary

  2. 知識+