复数： grounds
第三人称单数： grounding
过去式： grounded
过去分词： grounded
现在分词： grounding

Communications above ground were not much better .

地面的通讯也好不到哪去。

We 've covered a lot of ground in this chapter .

我们已经在这章中涵盖了很多基础内容。

The toilet was a hole in the ground .

而厕所就是地上的一个洞。

Re-enactors detest a development that threatens the ground they revere .

战斗模拟者讨厌发展威胁到他们所崇敬的土地。

Here she is on slightly firmer ground .

这里她持有更坚定的立场。