经美国卡车运输协会统计，美国大约有3500万专业卡车司机。
The American Trucking Association lists approximately 3.5 million professional truck drivers in the U. S.
美国卡车运输协会名单上列出了美国大约350万职业卡车司机。
The American Trucking Association lists approximately 3.5 million professional truck drivers in the U.S.
美国货运协会(American Trucking Associations)的首席经济学家鲍勃·科斯特洛(bobCostello)说，2009年，卡车司机的货运量下降了15%，跌至1.7亿车，这是现代历史上的最大跌幅。
Loads of goods delivered by truckers fell 15% in 2009, to 170 million loads, the largest drop in modern history, said Bob Costello, chief economist for the American Trucking Associations.
美国货运协会(American Trucking Associations)的首席经济学家鲍勃·科斯特洛(bobCostello)说，2009年，卡车司机的货运量下降了15%，跌至1.7亿车，这是现代历史上的最大跌幅。
Loads of goods delivered by truckers fell 15% in 2009, to 170 million loads, the largest drop in modern history, said Bob Costello, chief economist for the American Trucking Associations.
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