慢速英语:Days of Painful Tooth Repair May Be Over

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短语讲解：

1. It also says the technology speeds up a natural process of tooth repair.

speed up （使） 加速; 开快车; 加紧
例句：We must supervise and speed up the fulfilment of assigned tasks.
已经布置了的工作, 应当认真督促检查。

2. But it is too slow to stop bacteria from building up in small, narrow areas of the enamel.

build up 逐步建立; 增进
例句：In a small bay big waves will never build up.
在小的港湾里,永远也不会形成大的波涛。

3. Driving healthy calcium and phosphate minerals into your enamel and, through a natural process, it will bind on and add to the enamel that's there.

add to 增加， 加强
例句：I have nothing to add to my earlier statement.
我对我先前说的话, 没有什麽补充的。

4. The whole treatment lasts about as long as a normal drill-and-fill visit.

as long as 只要; 如果; 既然
例句：As long as I breathe, I will fight them.
只要一息尚存，我就要跟他们斗。