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    天条 天條

    tiāntiáo

    1. heavenly decree; divine commandment; (fig.) unbreakable taboo; absolute edict (often humorous or sarcastic)
    2. prohibition decrees of the Taiping Heavenly Kingdom 太平天國|太平天国[Tai4 ping2 Tian1 guo2]

    在公司里,不能迟到是一条天条。 Zài gōngsī lǐ, búnéng chídào shì yī tiáo tiāntiáo.