Each Thousand-Foot Level

• 每千英尺高度

Each Thousand-Foot Level的用法和样例：

例句

1. It is said that during one of the grand eruptions of Vesuvius it discharged massy rocks weighing many tons a thousand feet into the air.
   据说有一次，维苏威火山大爆发时，好多吨重的大岩石全给轰到千英尺高空。