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.

youdao

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.

youdao