The human mind need the answer,explanation and reason in any situation of life.

He is beginning to see for himself what has needed explanation before.

We need a full explanation of the very serious questions which remain.

"But I do need an explanation of why you are here."

"I think I'm going to need a better explanation than that."

Some, such as Nato, can stand alone but others need explanation.

They didn't need an explanation, but he provided one anyway.

"I need an explanation of what happened here," said the first officer.

And then, as though feeling that the phrase needed explanation, she went on.

This 24 is a real representation, so the last two terms need explanation.