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

You have a block here and then you have something above there floating in mid air.

你在这里放一个木块,让某物漂浮在木块之上

耶鲁公开课 - 心理学导论课程节选

Well, first of all, you may not survive for long, if you truly don't accept the fact that things, people being no exception fall when left in mid-air.

首先，你可能活不长，如果你不接受，人会从半空中掉下来的事实。

哈佛公开课 - 幸福课课程节选

The F-22 is what experts call an "air superiority" fighter, designed to defeat enemy jets in mid-air battles.

VOA: standard.2009.07.21

It can also destroy mortar shells in mid-air.

VOA: standard.2010.07.20