to cast pearls before swine
[cast|throw] {one's} pearls before swine

영어로 "cast pearls before swine"의 정의와 의미

to cast pearls before swine
01

to do good things and waste valuable resources for ungrateful people

to [cast|throw] pearls before swine definition and meaning
IdiomIdiom
example
예시들
The teacher put a lot of effort into preparing an engaging lesson, but her students were more interested in chatting and playing on their phones. She felt like she was casting pearls before swine.
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