airline (company that flies airplanes)

airmail; postal transport by airplane.

To perform; to do; to conduct oneself; to carry out.

every day; daily

everyday life; daily life

operation, service of aircraft or ships

operate, fly or ply

the aforementioned, the foregoing / greater than or equal to / (plain form Verb) + 以上は: since, now that, so long as, once

That is all. (used at the end of a text to indicate that there is nothing further)

(idiomatic, with negative sentence) no longer, not anymore