来自东部旁遮普邦卢迪亚纳市的67岁街头牙医SurinderSingh是个辍学生，从父亲那里学来了治牙的本事。
Street dentist Surinder Singh , 67 , from Ludhiana , in the eastern state ofPunjab , is a school dropout but learned the dentist trade from his father .
卢迪亚纳