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

This house is old, but you can feel its character.

I am looking forward to the day we meet again.

Again, he started that story.

Where is the lid for this pot?

He was like a double-dealer, expressing different opinions to two groups.

His jet is equipped with an afterburner.

He strongly advocates an anti-nuclear stance.