We should use more renewable energy.

We are using LED bulbs for energy saving.

Nuclear power is one of the renewable energies.

Nuclear power plants are an important source of energy supply.

Nuclear power generation is responsible for a part of energy supply.

The development of nuclear-powered ships must consider their impact on the environment.

He received the letter challenging him to a duel and began preparing for the duel.

He sat his behind on the chair.

My friend's name is Tajiri.

I went to Shiribetsu River in Hokkaido.