急！！求一篇关于汽车的外文！

How air suspension
An air suspension system for a vehicle, said vehicle having a frame, a front axle, at least one rear axle and wheels mounted near opposite ends of said rear axle, said air suspension system being mounted adjacent each wheel on said rear axle to support at least that portion of the load of said vehicle applied through said frame to said axle and to absorb forces imparted to each wheel and said axle during movement of said vehicle, said air suspension system including carrier arm means having a pivotal link means at the rear end thereof, one end of said pixotal link means being pivotally connected to said frame, and a mounting platform portion, said mounting platform portion being pivotally connected to the other end of said pivotal link means, said carrier arm means being connected to said axle by an axle hanger assembly being fixedly attached to said mounting platform portion of said carrier arm means at a lower portion thereof, said air suspension system inc