n.象牙质；齿质
Dentine : the bony material of the tooth, living. 齿质:构成牙的主体
Got mental when he saw the dentin his new car. 他因看到自己新车上的凹痕而生气。
Please strike up a dentin the medal(of a fender). 请在(防护板的)金属上敲出凹痕。
At least made a dentin the work. 至少在这项工作上取得了一点儿进步。
The loss put a dentin the team's confidence. 这失败给全队的信心投下了阴影。
The underlying layer, called dentin, is more yellow. 其下面层，称为牙本质，稍微显黄色。
