butter当作动词用，意思就是：涂黄油，butter someone up并不是把黄油涂在谁的身上，而是讨好某人;（非正式）奉承某人；巴结某人。

【例句】
You might also butter someone up because you want to impress them.
你想给他们留下好印象时可能也会奉承他们。

Ever since the new Sales director joined the company.She' s been buttering him up.
自从新的销售总监加入之后.她一直在拍他的马屁。