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.
Once she establishes her bakery, she hopes it will become her bread and butter for the rest of her life.
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。
