n.涂灰浆；隔离层；预堆边焊
动词butter的现在分词形式.
She was just buttering up to the boss to try to get a favour of him. 为了从老板那里得到好处，她正在巴结他呢。
Don't bother buttering up to me. I'm too old a hand to be won over by flattery. 不必劳驾来拍我马屁。我可是个老资格，才不吃那一套哩。
I've seen you buttering up the boss! 我看见你巴结老板来着！
