air lanes

The pilot kept the plane exactly inside the air lane between Beijing and Shanghai.

飞行员让飞机始终保持在京沪常规航空路线内。

Before taking off, the crew checked the weather along the air lane.

起飞前，机组人员检查了常规航空路线沿途的天气。

Several air lanes cross this region, so controllers watch the sky closely.

几条常规航空路线经过这个区域，因此管制员密切注视着天空。