请教高人out there的意义和用法

out there
向那边
[口]到战场
adv.
通常置于句尾，有时是中间。
例句：You should have been out there.

1.那边：Don't look for him in this city, he is not anywhere out there; he is in London right now.

2.当场 = on the spot(when something crucial happened);
You should have been out there = 当场帮忙的意思

3.out there = somewhere beyond our reach - 北美科幻SF系列The X Files：the truth is out there--捉摸不低的确实；不能查明事实真相； 够不着;鞭长莫及