buttersbup
—phrasal verbwithbutterverb[T]uk/ˈbʌt.ər/us/ˈbʌt̬.ɚ/
informalto be verykindorfriendlyto someone ortrytopleasesomeone, so that thatpersonwill do what youwantthem to do
奉承…；拍…的马屁
You'll have tobutterthem up abitbefore they'llagree.你得奉承他们一下，他们才会同意。