牙医可能会决定拔掉那颗牙,以免反复发作。A dentist may decide to extract the tooth to prevent recurrent trouble.牙斑如果不清除就会导致牙齿蛀蚀和牙龈疾病。When not removed, plaque causes tooth decay and gum disease.餐后要刷牙,而且每天要使用牙线清洁牙缝。Brush your teeth after each ...
“现在给我讲述一下你的航程吧。”——“非常乐意,先生。”"Now give me some account of your voyage." — "Very good, sir."票价包括您的飞行航程和接续的铁路旅费。Ticket prices include your flight and onward rail journey.这个港口离纽约的航程不到两天.This port is within two days'sail...