What he believed still seems to me to be indispensable for carrying on an intelligent and responsible life.

在我看来，苏格拉底的信仰在明智而负责的生活中始终不可或缺。

youdao

Intelligent computers will soon be an indispensable diagnostic tool for every doctor.

智能计算机很快将会成为每位医生必不可少的诊断工具。

《柯林斯英汉双解大词典》

The rubber spatula, which can be bought almost anywhere, is indispensable for scraping sauces out of bowls and pans, for stirring, folding, creaming, and smearing.

但是橡皮铲哪都买得到，不管是要从锅碗里刮出酱汁，还是搅拌，卷东西，做奶油泡或是涂涂抹抹，都少不了这件法宝。

youdao

Making things worse, he then goes on to say how important it is for all of us to become indispensable, for not to be indispensable is tantamount to economic and career suicide.

FORBES: Seth Godin's Linchpin Theory: Sound Advice or Career Suicide?

The "Liberation Trilogy" will be an indispensable starting point for future writers about the U.S. Army in World War II.

WSJ: Book Review: The Guns at Last Light

It may be some time before the technique can routinely outperform a dog's nose, but may become indispensable for cases in which a grave may be hidden beneath more than just soil.

BBC: Hidden graves found using chemical 'sniffer' technology