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indispensable
01
不可或缺的
absolutely necessary or crucial, to the point that being replaced or substituted is not possible
02
不可或缺的
radiography using X-rays and xerographic (rather than roentgenographic) techniques
03
不可或缺的
unavoidable
例子
Oxygen is indispensable for human life.
In modern society, the internet has become indispensable for communication and information.
The role of teachers is indispensable in educating future generations.
Honesty and integrity are indispensable qualities in a trustworthy leader.
Water is indispensable for the survival of all living organisms.
