noun🔗Share牙骨质，牙骨 Cement。 A bony substance that covers the root of a tooth; cement."The dentist explained that the cementum, a hard tissue covering the root of the tooth, helps anchor it to the jawbone. "牙医解释说，牙骨质，也就是覆盖在牙根上的一层坚硬组织，有助于将牙齿固定在颌骨上。anatomybodypartmedicineChat with AIVocabulary GamePractice Reading
