And it was as though one were in the dentist's chair and there were many dentists and they were all insane. 欧内斯特·海明威.丧钟为谁而鸣.
It is said that there are 20,425 dentists in the United States, and that in 1899 they employed in their practice 20,499,000 false teeth. Edward W. Byrn.十九世纪发明进展.
Others are used by newsboys, egg farmers, housewives, undertakers, dentists, judges in automobile races, and by persons in a thousand different lines of business. 佚名.神奇的知识之书.