镇定zhèndìngcalm; unperturbed; to calm downHSK 7-9PronunciationzhèndìngExample sentence面对突发状况,他表现得非常镇定。miàn duì tū fā zhuàng kuàng, tā biǎo xiàn de fēi cháng zhèn dìng.He remained very calm in the face of the sudden situation.Read and choose an answerOne fixed sampleExplore a sample