Trade was the mainstay of the urban economy in the Middle East, as caravans negotiated the surrounding desert, restricted only by access to water and by mountain ranges.

因为商队只能通过水路和山脉进入沙漠，贸易就成为了中东城市的主要经济支柱。

youdao

A country lacking short-term liquidity would be loth to approach the IMF for a loan under the "stand-by arrangement", the mainstay of the IMF's crisis lending.

一个缺乏短期流动性的国家可能不愿向国际货币基金组织寻求“备用信贷协议”——IMF 危机贷款的中流砥柱。

youdao

These remain the mainstay of professional GIS.

这些保持了专业GIS的核心技术。

youdao

He says rural India and smaller towns are becoming the mainstay of demand for gold in India.

VOA: standard.2009.09.19

They are all, you know, very popular. All the mainstay ones.

它们全都非常出名，都是电影业的支柱。

廉价看音乐剧的方法 - SpeakingMax英语口语达人

This is a mainstay of some slapstick humor including the classic movie, All of Me.

这是滑稽戏剧的一贯伎俩,同样也出现在经典电影《衰鬼上错身》中

耶鲁公开课 - 心理学导论课程节选

Even the Planning Commission admits that female sterilisation has become the mainstay of the programme.

BBC: Is India's population policy sexist?

Lifestyle change, including diet and exercise, is the mainstay remedy, although it poses big challenges.

WSJ: Heart-Attack Risk Starts Younger

These boots have been the mainstay of my wardrobe everywhere from grunge bars to La Grenouille.

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