That accident was completely avoidable.

He learned English by rote.

The study of nucleons is an important field in science.

Nuclear fusion is expected to be a future energy source.

The cell nucleus holds genetic information.

It is reported that North Korea has conducted another nuclear bomb test.

If a nuclear war occurs, humanity will be extinct.

The clitoris of a woman is very sensitive to sexual stimulation.

The whole world is calling for nuclear disarmament.