这条乡间小路是最颠簸的，到处都是小土包和坑洼。

This country road is the ___lumpiest, full of small bumps and potholes.

这个枕头是所有里面最凹凸不平的，睡起来很不舒服。

This pillow is the ___lumpiest one of all, making it very uncomfortable to sleep on.