91：什么时候用principal？什么时候用principle？

Question 91: When do you use principal and when do you use principle?

Answer: Principal is either a noun or an adjective meaning someone or something first in rank, authority, importance or degree.    e.g.
He is the school principal. She was the principal player in the hockey game.

Principle is a noun that means a fundamental truth, law, doctrine or a motivating force. e.g.
They fought for the principle of truth. Her principle in life differs from mine.

问题91：什么时候用principal？什么时候用principle？

回答：Principal可用作名词或副词，意为享有很高的头衔、权威、地位和等级的人。例如：
He is the school principal.
She was the principal player in the hockey game.

Principle是个名词，意为一条基本的真理、法律、教条或一个促进力。例如：
They fought for the principle of truth.
Her principle in life differs from mine.