n.不可或缺，不可缺少；必要；责无旁贷

The pen is indispensable for writing, without it, we would struggle to communicate on paper.
钢笔对于书写是必不可少的，没有它，我们在纸上表达就困难重重。
An experienced doctor is indispensable in an emergency situation.
在紧急情况下，经验丰富的医生是不可或缺的。
Basic first aid knowledge is indispensable for everyone, as it can save lives.
基本的急救知识对每个人都是必不可少的，因为它能救命。
The internet has become an indispensable tool for research and communication.
互联网已经成为研究和沟通不可或缺的工具。
A good education is indispensable for personal growth and success.
良好的教育对于个人成长和成功来说是必不可少的。
Water is indispensable for life; without it, all living organisms would cease to exist.
水对生命至关重要；没有它，所有生物都无法生存。
The ability to speak a foreign language is indispensable in today's globalized world.
在全球化的今天，会说外语的能力是必不可少的。
Indispensable team players are those who consistently contribute to the success of a project.
不可或缺的团队成员是那些持续为项目成功做出贡献的人。
Time management skills are indispensable for achieving a balanced work-life.
时间管理技巧对于实现工作与生活的平衡是必不可少的。
In any business, adaptability and flexibility are indispensable qualities for survival.
在任何行业中，适应性和灵活性都是生存所必需的品质。