know which side one's bread is buttered on

动词 v.

英文释义

动词 v.
  1. To be aware of where one's interests lie in a situation. idiomatic
    — They are all stupid when they are not crafty, and very few of them are crafty. The only wise Republicans are the millionnaires and their conscious henchmen. They know which side their bread is buttered on, and they know why.
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