英語笑話：牙醫(yī)的解釋

Little Jackie's mother was on the telephone with the boy's dentist.“I don't understand it，”she complained，“I thought his treatment would only cost $10，but you have charged me $40”

杰克的媽媽在給杰克的牙醫(yī)打電話。“我不明白，”她抱怨地說，“我以為他的治療費只需10美元，可你要了我40美元。”

"It is usually $10，madam，"agreed the dentist，“But Jackie yelled so loudly that three of my other patients ran away.”

“夫人，一般情況下是10美元，”牙醫(yī)贊同地說，“可是杰克大聲地喊叫，嚇跑了另外三位患者。”