Three months is too short a time to finish the experiment.
This airplane is capable of carrying 40 passengers at a time.
He carried six boxes at a time.
She was born just a generation past slavery. A time when there were no cars on the road or planes in the sky, when someone like her couldn't vote for two reasons: because she was a woman, and because of the color of her skin.
At a time when women's voices were silenced and their hopes dismissed, she lived to see them stand up and speak out and reach for the ballot. Yes, we can.
I can't do two things at a time.
Imagine that you have a time machine.
I can't finish the job in so short a time.
So, was there a time when you were a wizard, too?
We did not expect him to finish the task in so short a time.