即使是免提的使用已被证实会增加意外的风险。
Even hands-free use has been shown to increase the risk of accidents.
当今随着汽车的日益普及，人们在驾驶中使用手机免提的需求也日益增强，但是绝大多数手机并不具备免提功能，因此开发一套车载手机免提系统非常有意义。
With the popularization of cars, there is a great demand for car telephones. But most mobile telephones don't have the function of off-hook, so it's very meaningful to develop a kind of car telephone.
她让我来到免提电话前，因此他听到了我的讲话。
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