| 词汇 | breadandbutter |
| 释义 | bread and butter noun [uncountable] (informal) a person or company's main source of income 主要收入来源◆developing new companies is the bread and butter of silicon valley. 发展新公司是硅谷的主要收入来源。◆the bread-and-butter business of the company 公司的谋生业务 |
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