Please hurry up because we don't have time.

Calculate the total time.

The time complexity of this algorithm is O(n).

He was able to solve the complex calculation quickly.

He was calculating in his head.

Have you checked the timetable for the new semester?

I exercise at the gym for two hours every day.

What do you call 'time' in dialect?

I've been waiting for hours at that shop, but the meal still hasn't come out.

He was deep in thought, with a long pipe in his mouth.