1
be an indispensable (to/for sb/sth)
此处 indispensable 作为可数名词使用，表示'必不可少的东西'。
A good dictionary is an indispensable for language learners.
一本好词典对语言学习者来说是必不可少的物品。
必需品
先理解核心含义，再看它在真实句子里的用法。
必需品
A thing that cannot be done without; a necessity.
A good dictionary is an indispensable for language learners.
一本好词典对语言学习者来说是必不可少的物品。
不可或缺的事物；必需品。
A thing that is not dispensable; a necessity.
A passport is an indispensable for international travel.
护照是国际旅行中不可缺少之物。
In the kitchen, salt and pepper are indispensables.
在厨房里，盐和胡椒是不可缺少之物。
She considered her smartphone an indispensable for daily life.
她认为她的智能手机是日常生活中不可缺少之物。
此处 indispensable 作为可数名词使用，表示'必不可少的东西'。
A good dictionary is an indispensable for language learners.
一本好词典对语言学习者来说是必不可少的物品。
Her expertise became an indispensable to the project.
她的专业知识成了该项目不可或缺的部分。
Many chefs consider garlic an indispensable in their cooking.
许多厨师认为大蒜是烹饪中不可或缺的食材。
Not this
This book indispensable.
Use this
This book is indispensable.
indispensable是形容词，不能单独作谓语，必须与be动词连用构成系表结构。
Not this
Water is indispensable with life.
Use this
Water is indispensable to life.
表示'对……不可缺少'时，indispensable后接介词to或for，不接with。
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Includes Synonyms & Antonyms
Expand your vocabulary with synonyms and antonyms.
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
生活必需品
Food, water, and shelter are the indispensables of life.
食物、水和住所是生活必需品。
家庭必需品
Soap and washing powder are household indispensables.
肥皂和洗衣粉是家庭必需品。
旅行必备品
A passport and a charger are travel indispensables.
护照和充电器是旅行必备品。
墓地里满是不可或缺的人。——夏尔·戴高乐
She packed the indispensables for the trip: passport, phone charger, and medication.
她为旅行打包了必需品：护照、充电器和药品。
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拆解：in(不)+dispensable(可省去的)→不可省去的东西，即必需品。
语域：formal 常见场景：formal writing、academic discourse、formal speech 该词作名词时通常用于正式语体，多出现在书面语或正式讲话中；日常口语里更常见的是 necessity、essential 等说法。
作可数名词，表示不可缺少的人或事物，常用复数形式。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, OCTANOVE, WIKTIONARY.