A dentist, also known as a Doctor of Dental Surgery (DDS), is a surgeon who specializes in dentistry, the diagnosis, prevention, and treatment of diseases and conditions of the oral cavity.
这句最早出现于1866年的谚语 [1]，最初的版本是这样的: “Eat an apple on going to bed, and you’ll keep the doctor from earning his bread.” “睡前吃一个苹果，医生就挣不到吃饭钱了。” 到 …