One good way to save fuel is to reduce rolling resistance , which is caused , in part , by a vehicle 's weight repeatedly squashing its tyres .
降低油耗的一个有限途径就是减少滚动阻力,部分滚阻由车身重量不断挤压轮胎产生。
The germans , ever fearful that they may be asked to pick up the bill for the profligacy of others , are already squashing any talk of issuing joint euro-area bonds to relieve some of the pressure on national governments .