After a time, they reached the high ground above the Potomac.

VOA: special.2009.06.18

so you can't build really high or the buildings will just sink into the ground.

所以你不能把楼建得很高，否则建筑物会下沉到地里。

德克萨斯美女 - SpeakingMax英语口语达人

Also prune branches growing toward the ground, high branches growing straight up and shoots growing from the base of the tree.

VOA: special.2009.10.06

When I look back now from this high hill of my old age, I can still see the dead lying all over the ground.

VOA: special.2010.04.08

During an appearance on the NBC television program Meet the Press, Specter said he would also like to see the president reach beyond the federal court system - the traditional training ground for members of the high court.

VOA: standard.2009.05.03