1·Cocoa is the country's economic mainstay.
可可是这个国家的经济支柱。
—— 《牛津词典》
2·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。
3·In fact, it is the mainstay of many Agile development methods.
事实上，这是许多敏捷开发方法的支柱。
4·The program, known as H-1B, has been a mainstay of places such as Silicon Valley and Wall Street, where many companies have come to depend on computer programmers from India or engineers from China.
这个名为“H-1B”的项目，一直以来就是硅谷和华尔街等地区的支柱。 在这些地方，很多公司已经对来自印度的程序员或来自中国的工程师形成依赖。
5·Meanwhile, private consumption-the mainstay of the Philippine economy-fell somewhere between these two extremes.
同时菲律宾经济的支柱部分——私人消费居于这两种极端情况之间。