adj.解开钮扣的,无拘束的;
v.解开(纽扣)( unbutton的过去式和过去分词 );打开;表露;吐露;
例句:
" I'm one captain,'said a fat man whose tunic was unbuttoned.
" 我是队长, "一个敞开紧身上衣的胖子回答说.
He unbuttoned the old man at once.
他立刻解开老人的衣服.
He unbuttoned his shirt and revealed a big scar on his chest.
他解开衬衣,露出胸膛上一个大伤疤.