adj.用鈕扣裝飾的；扣緊的

His coat has been buttoned up to the chin. 他的外套鈕扣扣到下巴。

The job is buttoned up. 這工作已完成了。

I've never met anyone so buttoned up. 我從來(lái)沒(méi)有見(jiàn)到過(guò)這樣不愛(ài)講話的人。

adj.鈕扣解開(kāi)的；放松的；無(wú)約束的

動(dòng)詞unbutton的過(guò)去式和過(guò)去分詞形式.