King's College London found that fine dust released when a vehicle brakes could cause a number of health problems.
伦敦大学国王学院发现汽车刹车时释放的粉尘会导致一系列健康问题。
PBS英语讯息
Volkswagen is recalling more than 246,000 SUVs in the U.S. and Canada over faulty wiring that makes the vehicles brake unexpectedly, sometimes in traffic.
A brake is a mechanical device that inhibits motion by absorbing energy from a moving system. It is used for slowing or stopping a moving vehicle, wheel, axle, or to prevent its motion, most often accomplished by means of friction.