地面滞留 surface detention 径流形成过程中水流沿坡、槽运行时，部分雨水暂时蓄存于流域表面的现象。
灰云让航班不得不滞留在地面，是因为火山灰会阻塞飞机的发动机并且导致严重损坏。
The reason why the dust cloud has grounded planes is because volcanic ash can clog up aeroplane engines and cause serious damage
当你触摸地面迟疑地问：谁在这里滞留？
“终于自由”使它自由到无力地躺在尘土中，无助地任风沿着地面将其吹走，碰到第一个障碍物便毫无生命地滞留在那里了。
"Free at last" free to lie powerless in the dirt, to be blown helplessly along the ground, and to lodge lifeless against the first obstruction.
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