At Harvard, the library is an indispensible part of everybody's life.

在哈佛，图书馆是每个人生活中不可一部分。

He said the United States is the most " indispensible" nation in the world.

他说，美国是界上最“必不可”国家。

Harry was an indispensible part of the mingled outpourings of jubilation and mourning, of grief and celebration.

无论是欢庆还是悲伤、欢乐还是难过人们，都不想让哈利离开。

Be the go-to person for that one thing, and be indispensible because of it.

成为那个领域不可或人。