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

Research on cold fusion is still controversial.

There is a complex love triangle between them.

The result is certainly the result of his efforts.

My mother woke me up.

The number of nuclear-armed countries is increasing worldwide.

Please calculate the area of this right-angled triangle.

It's difficult to calculate the area of this hexagon.

He is known as an expert in subcritical nuclear experiments.

He claims to have seen an unidentified flying object.