牢记láojìto keep firmly in mind; to remember wellHSK 7-9PronunciationláojìExample sentence老师讲的这些知识点,我们必须牢记在心。Lǎoshī jiǎng de zhèxiē zhīshídiǎn, wǒmen bìxū láojì zài xīn.We must keep these knowledge points the teacher mentioned firmly in mind.Read and choose an answerOne fixed sampleExplore a sample