"I thought you should know--we've learned something new in the past few hours."

What had I learned in the last few hours?

He can't possibly know how much I've learned in the last few hours.

I think it would help if Bill Goode summarized all that we have learned in the last few hours.

And nothing Spock had learned in the intervening two hours since that conversation had altered his opinion.

What she learned about her in the next few hours would be vital in deciding that.

But, as was learned in the next few hours, it was not impervious to two jumbo jets fully laden with fuel.

I have learned much about you in the past few hours.

Baal herself had learned a lot about it only in the last few hours, the hard way.

I believe I have learned more about Martians in the past few hours than was learned in all that time.