| 词汇 | mainstay |
| 释义 | main·stayBrE /ˈmeɪnsteɪ/ NAmE /ˈmeɪnsteɪ/ noun [usually sing. ]~ (of sth )a person or thing that is the most important part of sth and enables it to exist or be successful 支柱；中流砥柱◆ Cocoa is the country's economic mainstay . 可可是这个国家的经济支柱。 |
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