mainstay
US /ˈmeɪn.steɪ/
UK /ˈmeɪn.steɪ/
名词
支柱, 中坚, 主要依靠
a person or thing on which something else is based or depends
示例:
•
Agriculture is the mainstay of the country's economy.
农业是该国经济的支柱。
•
The elderly residents are the mainstay of the local church.
老年居民是当地教堂的中坚力量。