one's bread and butter
01
the main source of a person or business's income
Idiom
例子
At the moment, freelancing is her bread and butter while she explores other career options.
bread-and-butter
01
基本的, 必不可少的
*** providing a basic means of subsistence
例子
a bread-and-butter job
一份基本的工作
02
日常的, 基本的
*** relating to people's practical, everyday needs and concerns
例子
These are hardly the bread-and-butter concerns of struggling farmers.
这些几乎不是挣扎中的农民的基本关切。
