四级With the increase in auto production, private turnpike (收费公路) companies under local authorities began to spring up, and by 1921 there were 387,000 miles of paved roads.
随着汽车产量的增加,私人收费公路(收费公路) 地方当局下属的公司开始涌现,到1921年,铺设的道路达到387000英里。
2006年6月大学英语新四级(CET-4)真题
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