Cars have become an indispensable part of our lives.

汽车已成了我们生活中必不可少的一部分。

《牛津词典》

The central business district is an indispensable part of a modern city.

中心商务区是现代城市不可或缺的一部分。

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You know that tea is China's national drink and an indispensable part of the life a Chinese person.

你知道茶是中国的国饮，是中国人生活中不可或缺的一部分。

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Microsoft, for decades an iconic software company, now sees hardware as an indispensable part of its future.

FORBES: Steve Ballmer Joins Larry Ellison as Software-Hardware Evangelist

For starters, the NFL has positioned itself as an indispensable part of Americana.

FORBES: Recession-Proof Sports Leagues

As carriers of Li culture, traditional Li textile techniques are an indispensable part of the cultural heritage of the Li ethnic group.

UNESCO: Culture