mainstay

/ˈmeɪnsteɪ/📚 13705 1
If you describe something as the mainstay of a particular thing, you mean that it is the most basic part of it. 最基本组成部分

noun [专属名词]支柱;中流砥柱;主要的依靠;主桅支索

This principle of collective bargaining has been a mainstay in labour relations in this country.
这种集体谈判原则已成为该国劳动关系的一个重要基础。

单词造句:
网友用“Mainstay”造句精选
Fish and rice were the mainstays of the country's diet. 鱼和米是这个国家的主要食物。
Cocoa is the country's economic mainstay. 可可是这个国家的经济支柱。
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。