空中旅行：通过飞机在空中旅行的行为或方式。
搭飞机旅行
航空旅行
空中旅行
He detested air travel.
他厌恶空中旅行。
Air travel is not an environmentally-friendly way to travel because it uses a lot of energy.
航空旅行不是一种环保的旅行方式，因为它耗费大量的能源。
You don't have to pay high prices for air travel anymore.
你不必再为航空旅行支付高昂的费用了。
The Department of Agriculture, for example, provides biologists to help study wildlife that could be a danger to air travel.
VOA : special.2009.04.01
Another reason for the increase in bird strikes is the growing popularity of air travel in the United States.
VOA : special.2009.04.01
Somehow, if you could manufacture a really smooth frictionless surface, that if you took a hockey puck or something and an air cushion and you give it a push, in some idealized world, it'll travel forever.
如果你制造一个绝对光滑无摩擦的表面,然后在上面放个冰球或者别的什么,或者气垫,然后推它一下,在理想条件下,它会永远运动下去
基础物理课程节选 : 耶鲁公开课
The United States halted air travel for three days after the terrorist attacks in two thousand one.
VOA : special.2010.04.23
According to the FAA, the system will make air travel faster, safer and cheaper.
Cambodia Airlines is only the latest sign of bullishness in Southeast Asian air travel.
FORBES: Cambodia Tycoon To Launch New Airline With Philippine Flag Carrier
Beyond any impact on fish, wildlife and humans, large ash clouds could negatively impact air travel.