“玲玲,听过‘一线万金’的故事吗?”贝贝神秘兮兮地问。“没有听过。”玲玲答道。“我给你讲讲,故事是这样的:20世纪20年代,美国福特汽车公司一台昂贵的发电机发生了故障。该公司的工程师多次会诊,都找不出故障。后来,公司请来了德国电机专家斯坦门茨,他经过两天两夜的工作,终于查明原因。他用粉笔 ”Ling-ling, heard the story line?“ ”Babe mysteriously asked. “Never heard. ” Ling Ling replied. "I'll tell you, the story is this: In the 1920s, an expensive generator at Ford Motor Company in the United States broke down and the company's engineers met several times and found no problems. Came to the German motor expert Stan Menz, after two days and two nights of work, and finally find out why. He used chalk