mainstay

名词 mainstay:

1. a prominent supporter
   同义词：pillar
2. a central cohesive source of support and stability
   同义词：anchor, keystone, backbone, linchpin, lynchpin
3. the forestay that braces the mainmast

1. He is the mainstay of our theatre group.
   他是我们剧组的台柱。

main.stay

n.（名词）
A chief support:
主要依靠：
例句：
Agriculture is a mainstay of the economy.
农业是经济的支柱

Nautical A strong rope that serves to steady and support the mainmast of a sailing vessel.
【航海】 主桅支索：用来稳定和支撑帆船主桅的结实的绳子