It can follow you, flying or staying in mid-air.

它可以在你的指挥下，飞行或停留在半空中。

youdao

The cheapest option could be to use giant mid-air refuelling aircraft, such as the US air force's KC-10 Extender, filled with sulphur dioxide or hydrogen sulphide gas.

最便宜的方案是使用巨型空中加油飞机——例如美国空军的KC-10“补充者”空中加油机（KC-10 Extender），装满二氧化硫和硫化氢气体。

youdao

And such raising is not from mid-air, or behind closed doors, but is actually based on popularization.

而这种提高，不是从空中提高，不是关门提高，而是在普及基础上的提高。

youdao

Aviation analysts say the sharp volcanic particles can damage a jet engine or cause it to shut down in mid air.

VOA: standard.2010.04.15

For those requiring another notch up when it comes to service, Kingfisher Elite offers private jets (on which you can even take a mid-air shower), for charter for business....or, indeed, pleasure.

BBC: Smooth skies: The world's best airlines

The Russian Ministry of Emergency Situations, or Emercom, published the full list of the 45 passengers on board a plane that exploded mid air and crashed in the Volga River on Wednesday afternoon in central Russia.

FORBES: Names Of Deceased KHL Hockey Players Released In Russia