polite

adjective [原级]有礼貌的，客气的；礼节性的，客套的；上流的，有教养的

Everyone around him was trying to be polite, but you could tell they were all bored.  ^{他身边的每一个人都尽力表现得彬彬有礼，但你可以看出他们都厌倦了。}