您要查找的是不是：
- dental primary groove 原牙沟
- Dental prosthetics involving a bridge or bridges. 用齿桥补牙用一个或多个齿桥进行牙齿修复
- I had undergone a major dental operation. 我经受了一次牙科大手术。
- The disease is still in its primary stage. 这疾病仍然在初发阶段。
- The little boy left primary school at eleven. 这个小男孩十一岁时小学毕业。
- The doctor told me that I have many dental problems. 医生说我的牙齿问题很多。
- Sure. We are friends since primary school. 当然，我们从小学就是朋友了。
- A shaft on which a working tool is mounted, as in a dental drill. 心轴用于安装工具的蕊棒，如牙钻蕊棒
- I started primary school when I was 5 years old. 我五岁时开始读小学。
- A primary cause of Tom's failure is his laziness. 懒惰是汤姆失败的主要原因之一。
- Primary school teachers use a lot of visual aids. 小学教师使用大量的视觉教具。
- Love and hatred are primary emotions. 爱和恨是基本的情感。
- The Democratic primary was held this month. 民主党候选人初选於本月举行。
- Primary education comes under the umbrella of local government. 小学教育受地方政府的保护。
- Silver amalgam is used as a dental filling. 银汞合金被用作牙的填料。
- He only accepted the primary education off and on in his childhood. 他小时候只断断续续地接受过初等教育。
- I will like to have a dental checked - up. 我要去牙科做一次检查。
- The primary reason for advertising is to sell more goods. 做广告的根本目的是要多出售货物。
- The buildup could lead to costly dental repairs. 这样做会导致你花很花钱去补牙。
- To clean between(teeth) with dental floss. 用牙线清洁（牙齿）
