We must not forget the horror of the atomic bomb.

He shivered when he saw the news of that terrible accident.

I forgot his birthday.

The police found the bomb and defused it.

Understanding the structure of atoms is a fundamental part of physics.

He often forgets himself because he is too absorbed in his work.

The police found a dirty bomb and immediately reported it to the experts.

The police were desperately trying to defuse the time bomb.

The use of nuclear bombs is one of the greatest threats to mankind.

He was involved in the development of the hydrogen bomb.