1 N-UNCOUNT [usually with poss] 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. 生计;谋生之道;主要收入来源
2 ADJ [ADJ n] 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. 最基本的;影响到大多数人的