We should use more renewable energy.

We are using LED bulbs for energy saving.

What do you call 'time' in dialect?

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

I exercise at the gym for two hours every day.

Have you checked the timetable for the new semester?

He read the Thousand and One Nights and was drawn to the charm of the Orient.

How many megajoules is this energy?

Ionization energy is the minimum energy required for an atom or molecule to lose an electron.

The potential energy of this ball is large because it is in a high position.