n.  黄油，牛油

v.  涂黄油于…

• butter wouldn’t melt in sb’s mouth 

  某人装出一副老实样

• butter sb up  奉承，讨好〔某人〕

• In the back room of the little bakery, his interest in design and his baking talent combined to work wonders – he shaped delicious masterpieces out of flour, butter and sugar. 用面粉、黄油和糖做出的美味佳肴

• Don’t think you can butter me up that easily. 不要以为你这么容易就能讨好我。