国家公路交通安全局单独报告估计，在2007年任何一个时间，都有一百多万美国司机开车打手机。

A separate NHTSA report estimates that at any given time in 2007, there were more than one million U. S. drivers using a cellphone while driving.

youdao

国家公路交通安全局单独报告估计，在2007年任何一个时间，都有一百多万美国司机开车打手机。

A separate NHTSA report estimates that at any given time in 2007, there were more than one million U. S. drivers using a cellphone while driving.

youdao