know which side your bread is buttered on
US /noʊ wɪtʃ saɪd jʊər brɛd ɪz ˈbʌtərd ɑn/
UK /noʊ wɪtʃ saɪd jʊər brɛd ɪz ˈbʌtərd ɑn/
1.
自分の利益がどこから来るかを知る, 自分の得になることを知る
to be aware of where your advantages or benefits come from and to act in a way that maintains them
:
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He always helps his boss because he knows which side his bread is buttered on.
彼は自分の利益がどこから来るかを知っているので、いつも上司を助ける。
•
You need to know which side your bread is buttered on if you want to succeed in this company.
この会社で成功したいなら、自分の利益がどこから来るかを知る必要がある。