定律dìnglǜscientific law; established rule or principleHSK 7-9PronunciationdìnglǜExample sentence牛顿发现了万有引力定律。Niúdùn fāxiàn le wànyǒu yǐnlì dìnglǜ。Newton discovered the law of universal gravitation.Read and choose an answerOne fixed sampleExplore a sample