这些人影都紧贴地面，火球好像就在他们那里忽亮忽灭的。
They were all running close to the ground and it was from these figures that the fires seemed to start up and then die.
风沙起动后，用紧贴地面的平面作为风沙起动床面的简化模拟面。
The plane appressing ground surface is regarded as the simplified simulation surface after sand grains are raised.
有些攀岩者一生都致力于抱石这种艺术，而一些最难的线路是紧贴地面的。
There are climbers out there who have devoted their life to this art and some of the hardest moves are closest to the ground.
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