cruising altitude

基本解释

This height is also the frequent cruising altitude of commercial airliners.
这一高度也是商务航线的常用巡航高度。
At a cruising altitude of 30,000 feet, pressure outside of the plane is about two and a half times lower than what passengers experience on the inside.
在三万英尺的巡航高度，飞机外部的气压大约比乘客感受的内部气压低2.5倍。
It can gather data on objects reportedly as small as a shoebox, through clouds, day or night, for 32 hours from 18, 000 metres—almost twice the cruising altitude of passenger jets.
据报道这种无人机可以在18000米的高空不分昼夜的连续飞行32小时，且可以透过云层监视地面像鞋盒那么大小的目标。它飞行的这一高度几乎是民航客机巡航高度的两倍。

During the demonstration flights, a pilot handled the takeoff and climb to cruising altitude.
FORBES: Pilot-Optional Flight Is Closer Than You Think
Once the A380 reached cruising altitude, passengers were free to walk around both decks to explore the amenities.
FORBES: Magazine Article
Once at cruising altitude I dialed in an economy fuel setting of 53 gallons per hour at a true airspeed of 390mph.
FORBES: Magazine Article