He decided to tie one end of the road to what remained of a tree in the ground.

VOA: special.2009.01.24

and the ground is really soft, so that you don't end up hurting your joints.

土地也很柔软，这样你的关节就不会受伤了。

What do you 实战 - SpeakingMax英语口语达人

"This can fly,and will fly." "And we're looking forward to doing so when ground tests end, which we anticipate for later this year."

VOA: standard.2010.08.11