one's bread and butter
01
the main source of a person or business's income
예시들
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
기본적인, 필수적인
*** providing a basic means of subsistence
예시들
a bread-and-butter job
기본적인 일자리
02
일상적인, 기본적인
*** relating to people's practical, everyday needs and concerns
예시들
These are hardly the bread-and-butter concerns of struggling farmers.
이것은 어려움을 겪는 농민들의 기본적인 관심사가 아닙니다.



























