大大dàdàgreatly; enormouslyHSK 4PronunciationdàdàExample sentence这个新方法大大提高了工作效率。Zhège xīn fāngfǎ dàdà tígāo le gōngzuò xiàolǜ.This new method greatly improved work efficiency.Read and choose an answerOne fixed sampleExplore a sample