noun🔗Share主心骨，顶梁柱 A chief support."Agriculture is the mainstay of this country’s economy."农业是这个国家经济的顶梁柱。thingbusinessorganizationChat with AIVocabulary GamePractice Reading
noun🔗Share支柱，顶梁柱 Someone or something that can be depended on to make a regular contribution."My grandmother is the mainstay of our family; she always provides meals and support. "我的奶奶是我们家的顶梁柱；她总是为大家提供饭菜和支持。organizationbusinesssocietyChat with AIVocabulary GamePractice Reading
noun🔗Share主桅支索，主索。 A stabilising rope from the top of the mainmast to the bottom of the foremast."The mainstay secured the ship's rigging, preventing the masts from collapsing. "主桅支索固定住船上的索具，防止桅杆倒塌。nauticalsailingtechnicalChat with AIVocabulary GamePractice Reading
