Automobile brake system is used to force the running of the vehicle to slow or stop, the vehicle speed of the driving downhill remained stable and that the car had been stopped in situ ( including on the slope ) resides not moving mechanism.  汽车制动系是用以强制行驶中的汽车减速或停车、使下坡行驶的汽车车速保持稳定以及使已停驶的汽车在原地(包括在斜坡上)驻留不动的机构。  Computers that are too slow, inefficient applications or a vehicle that breaks down constantly can kill your motivation.  版本过低的电脑、低效率的应用软件或着时常会发生故障的交通工具都会抹杀你的积极性。