Paul Sharpe of King's College says a new treatment for cavities is simpler.

国王学院的保罗·夏普（Paul Sharpe）表示，治疗牙洞的新方法更加简便。

Sharpe explains that when using this already-approved drug to repair cavities, researchers use only a small amount and they use it locally.

夏普解释称，研究人员使用这种获批药物修复蛀洞时，会在局部少量地使用。

[Chris] I worked with Bob on sharping this knife, had a chance to talk to him about his knives.

- [克里斯]我和鲍勃一起磨这把刀，有机会和他谈谈他的刀。