留心liúxīnto be careful; to pay attentionHSK 7-9PronunciationliúxīnExample sentence过马路时请留心来往车辆。Guò mǎlù shí qǐng liúxīn láiwǎng chēliàng.Please pay attention to the passing vehicles when crossing the street.Read and choose an answerOne fixed sampleExplore a sample