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inoh

know which side one's bread is buttered on

/nəʊ wɪt͡ʃ saɪd wʌnz brɛd ɪz ˈbʌtəɹd ɔn/

understand where one's interests lie.

“It pays to know which side one's bread is buttered on.”
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know which side one's bread is buttered on 的插图:understand where one's interests lie.