the rubber meet the road是美国轮胎广告词,指轮胎性能好.可引申为“发挥实际作用、派上用场”.
the rubber meets the road是理论联系实际的意思.
Where rubber meets the road (橡胶(轮胎)碰到路的地方?意思是Where it really counts; What's really important
找到三种解释.你根据上下文选吧.应该最偏向最后一个