Cold fusion is a part of physics and is a phenomenon that is not yet fully understood.

Research on cold fusion is still controversial.

The number of nuclear-armed countries is increasing worldwide.

The development of fusion reactors could potentially be the key to solving future energy problems.

The teacher imparted knowledge to the students.

Yuu always helps me.

Yuu believed in divine help from God.

Akihiro went to see the first sunrise of the year.

His success was an inevitable result.

He is very handsome.