关节guānjiéjoint (physiology); key point; critical phaseHSK 7-9PronunciationguānjiéExample sentence他的膝关节因为长期运动而受损。tā de xī guānjié yīnwèi chángqí yùndòng ér shòusǔn.His knee joint was damaged due to prolonged exercise.Read and choose an answerOne fixed sampleExplore a sample