新闻英语：“代驾”怎么说

（单词翻译:单击）

 　　Beijing， which registered 4.7 million motor vehicles by the end of 2010， has a need for about 3，000 designated drivers a day， according to the estimates of business insiders。截止2010年底，北京已注册机动车数量为470万辆。据业内人士估计，北京每天的代驾司机需求量为3000名。