[ yīkǒu ] 1.(表示口气坚决) with certainty; readily; flatly 短语和例子 一口答应 readily agree; readily promise; 一口否认 flatly deny; 一口回绝 flatly refuse; 一口咬定 assert categorically; accuse definitely2.(纯正) pure 短语和例子 讲一口地道的英语 speak idiomatic english3.[量] a mouthful; a bite 短语和例子 一口蛋糕 a bite of cake; 呷一口威士忌 take a nip of whisky; 今天我们一口饭都没吃。 we have not had a bite today. 他要一口把它吃掉。 he wants to eat it up at a mouthful