mainstay
US /ˈmeɪn.steɪ/
UK /ˈmeɪn.steɪ/
名詞
1.
主力
the most important part of something, providing support for everything else:
例:
•
In the early 1900s, farming was the mainstay of the national economy.
Lingolandでこの単語を学ぶ
主力
the most important part of something, providing support for everything else: