不确定地
Indefinitely \In*def"i*nite*ly\, adv. In an indefinite manner or degree; without any settled limitation; vaguely; not with certainty or exactness; as, to use a word indefinitely. If the world be indefinitely extended, that is, so far as no human intellect can fancy any bound of it. --Ray.
indefinitely adv : to an indefinite extent; for an indefinite time; "this could go on indefinitely"