1. 名詞
   支柱
   中流砥柱
   主要依靠, 唯一的依靠
   主要支持
   (船)支持主桅的繩索
   /此名詞複數為"mainstays"/
   

   同義字詞
   anchor,buttress,dependence,dependance,pillar,reliance,standby
   

例句

1. Lots of prayer has been my mainstay .
2. This had been its mainstay since 1980.
3. The mainstay of Ertebølle economy was fish.
4. Whaling – the mainstay of Leith for centuries.
5. Tourism is the mainstay of the town's economy.
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