評論
打印
1.It also says the technology speeds up a natural process of tooth repair.
speed up加速
Action had been taken to speed up the release of cheques.
已經采取行動加速支票的發放。
2.This process is called re-mineralization. But it is too slow to stop bacteria from building up in small, narrow areas of the enamel.
build up積累
Deposits of plaque build up between the tooth and the gum.
牙齒和牙齦之間會滋生牙斑。
3.And they are quick to note that regular cleaning with fluoride toothpaste helps prevent cavities in the first place.
in the first place原先；起初
I don't think we should have been there in the first place.
我認為我們從一開始就不該在那兒。
