n.支柱，中流砥柱

原形：mainstay复数：mainstays

The beef jerky has been the mainstay of our camping trips for years.
这种牛肉干多年来一直是我们露营旅行的主要食物。
The mainstay of the economy is the thriving tech industry.
经济的主要支柱是蓬勃发展的科技行业。
The mainstay of their diet was potatoes and vegetables.
他们的饮食主食是土豆和蔬菜。
The old oak tree has stood as the mainstay of the garden for decades.
那棵古老的橡树几十年来一直是花园的标志。
He is the mainstay of the team, always providing solid support.
他是团队的核心，总是提供坚实的支持。
The company's mainstay product line remains popular among consumers.
公司的主打产品线在消费者中仍然很受欢迎。
Her resilience and determination have been the mainstay of her success.
她的韧性和决心是她成功的关键。
The library's collection of rare books is a mainstay for researchers.
图书馆珍藏的古籍对研究人员来说是必不可少的。
His passion for teaching is the mainstay of his career.
他对教学的热情是他职业生涯的基石。
The mainstay of any healthy lifestyle is a balanced diet and regular exercise.
任何健康生活方式的基础都是均衡饮食和规律锻炼。