noun 下载 🔗分享 牙本质,齿质。 The hard, dense calcareous material that makes up the bulk of a tooth Examples : "The dentist explained that the dentin, which forms the main body of my tooth, was becoming sensitive due to a cracked filling. " 牙医解释说,因为补牙材料裂开了,构成我牙齿主体的牙本质,也就是齿质,变得敏感起来了。 anatomy physiology medicine body 与AI对话词汇游戏阅读练习