height

　　n. 高地；高度；[数] 顶垂线；高级；海拔
They were flying at high altitude.

　　他们正在高空飞行。

　　The plane made a dive to a lower altitude.

　　飞机俯冲到较低高度。

　　We are flying at an altitude of 6 000 metres.

　　我们的飞行高度是6 000米。