bread and butter
1.N-UNCOUNT 不可数名词生计；谋生之道；主要收入来源 Something that is the bread and butter of a person or organization is the activity or work that provides the main part of their income.
【搭配模式】：usu with poss
The mobile phone business was actually his bread and butter.
移动电话业务实际上是他的主业。
2.ADJ 形容词最基本的；影响到大多数人的 Bread and butter issues or matters are ones which are important to most people, because they affect them personally.
【搭配模式】：ADJ n
The opposition gained support by concentrating on bread-and-butter matters.
反对党关注与大多数人切身利益相关的问题，从而赢得了人们的支持。
