Definition: a vertical distance down from somewhere to the ground Level: C1
从悬崖顶到地面的垂直距离大约有50英尺。
It's a ___drop of about 50 feet from the top of the cliff.
这位特技演员在跳下前测量了桥面到水面的垂直距离。
The daredevil measured the ___drop from the bridge before his jump.
消防员估计从三楼窗户到地面的垂直距离在可生存范围内。
The firefighter estimated the ___drop from the third-floor window to be survivable.
