They provide friction, so the vehicle can grip the road, but some of the power supplied to the tyres is lost as heat.

汽车的抓地力正是因为轮胎的摩擦力提供的。但供给轮胎的能量一部分要消耗在生成的热量。

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Friction drives the wheels to go on the road, so car can be moved. If wheels are trapped in the mud or sand, they can not go.

车轮一定要走在有摩擦力的路面上，这样车子才能行动。若车轮落入泥浆沙坑之中，那就动弹不得矣。

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Winter, tire easily aging, lower coefficient of friction with the road surface, the situation appears unstable grip.

冬季来临，轮胎容易老化，与路面的摩擦系数降低，出现抓地不稳的状况。

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By registering the amount of friction between the tyre and the road, the system warns the car's computer-control equipment if the car is in danger of aquaplaning on a large puddle or skidding on ice.

ECONOMIST: MONITOR