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- Take bisphenol-A, a compound used to make eerything from computer keyboards to dental sealants to food-can lining. 如双酚丙烷，一种广泛应用化合物，从制造电脑键盘到牙科封闭层，再到食品罐头内层。
- Dental sealants can help provide additional protection against cavities on the chewing surfaces of teeth. The plastic coating is painted on the grooved chewing surfaces of the back teeth. 封牙剂为牙齿的嚼面提供额外保护预防蛀牙。封牙剂通常涂在后面牙齿有沟的嚼面。
- Cook the meat quickly at first to seal in the juices. 一开始要大火烧肉，以便保存肉汁。
- The putty gives a good seal round the window. 窗户四周泥的油灰密封效果很好。
- Our foil packets seal the flavour in. 我们用锡纸包装以保持原味。
- This document carries the royal seal. 这份文件上盖有王室印章。
- The seal on the bottle has perished. 瓶子的封记已经腐烂。
- 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。
- He impressed his seal on the wax. 他在火漆上盖了他的私章。
- The deal needs the government's seal of approval. 这一交易需经政府批准。
- Seal (up) the window to prevent draughts. 把窗户封起来以防风。
- A round seal affixed to a papal bull. 印玺一个圆形的教皇的正式宣布训令或法令的封印
- dental sealant 牙封闭剂
- She forgot to seal her letter before mailing it. 她忘记在寄信前将信封上。
- The experience set the seal on their friendship. 这一经历确定了他们的友谊。
- He affixed his seal to the document. 他在文件上盖了印。
- Their handshake was a seal of friendship. 他们的握手是友谊的象徵。
- Do you know how much a seal coat is? 你知道海豹皮大衣多少钱一件?
- The doctor told me that I have many dental problems. 医生说我的牙齿问题很多。
