απόμαχος 用英语:

Tom is a veteran.

a veteran of the Second World War

He's a veteran location scout.

A strong veteran, having trained for tens of years, can fall to a weakling in a moment of laxness. That's what the martial arts world is.

In Tatoeba, you gotta always listen to veteran members. They'll tell you what can't be done and why. Then do it.

Suffering from terminal cancer, he was thrown out of a certain veteran hospital in New York three times because he adamantly rejected blood transfusions.