For aught he knows, we might be in Beijing. 他不知道我们会在北京。
He may be rich for aught I know. 他也许有钱但我一无所知。
aught
[ noun ] a quantity of no importance <noun.quantity> it looked like nothing I had ever seen beforereduced to nil all the work we had done we racked up a pathetic goose egg it was all for naught I didn't hear zilch about it
Aught \Aught\, Aucht \Aucht\, n. [AS. ?ht, fr. [=a]gan to own, p. p. [=a]hte.] Property; possession. [Scot.] --Sir W. Scott.
Aught \Aught\, n. [OE. aught, ought, awiht, AS. [=a]wiht, [=a] ever + wiht. [root]136. See {Aye} ever, and {Whit}, {Wight}.] Anything; any part. [Also written {ought}.]
There failed not aught of any good thing which the Lord has spoken. --Josh. xxi. 45
But go, my son, and see if aught be wanting. --Addison.
Aught \Aught\ ([add]t), adv. At all; in any degree. --Chaucer.