1. The ride was too bumpy for conversation.
    一路上车子上下颠簸, 根本无法讲话。

2. The greater part of the journey is spend on narrow, bumpy roads which are crowded with traffic.
    大部分旅程常常要消靡在狭窄、坎坷不平而且车辆拥挤的道路上。

3. On the very outside of the earth is a bumpy crust of rock and soil.
    地球的最外层是由岩石和土壤构成的凹凸不平的硬壳，