Agriculture forms the backbone of the rural economy.

农业是农村经济的基础。

《牛津词典》

Windows and Office are the backbone of the company.

Windows和Office是公司的支柱。

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The Constructor: Backbone of the Chi Square test

构造函数：X 平方分布检验的主干

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And for South Korea, where exports are the backbone of the economy, being well regarded abroad is all the more important.

VOA: standard.2009.11.05

This material will be necessary to do the listening exercises for the course, which is sort of the backbone of the course.

做听力练习时我们必须使用这些材料,听力训练是课程的核心内容

耶鲁公开课 - 聆听音乐课程节选

He is independent in a way that nobody who was not a king or an aristocrat in the past has ever been -- a new kind of man, the backbone of the polis as it emerges.

他是如此的独立以至于,前无古人后无来者,一个全新的人,它不断地发展并成为城邦制的脊梁

耶鲁公开课 - 古希腊历史简介课程节选

"They are the backbone of the EU, " said the German Labour Minister, Ursula von der Leyen.

BBC: Europe is afraid - the battle for new jobs

The Korean, South Asian and Chinese communities are a backbone of the small-business community.

WSJ: The Weekend Interview with Annise Parker: The Modern American Boomtown

Given that this is the backbone of the shirt, particular attention is in order.

FORBES: What You Need To Know Before You Order A Bespoke Shirt