固定搭配 at an altitude:在某一高度 例句与用法:1.We are flying at an altitude of 20000 feet.我们的飞行高度是20000英尺.2.The airline
at the altitude of 可以用来表示水平吗?
固定搭配 at an altitude:在某一高度 例句与用法:1.We are flying at an altitude of 20000 feet.我们的飞行高度是20000英尺.2.The airline