Gb	Eng
当我们听说他们平安无事时，都松了一口气。	We all heaved a sigh of relief when we heard that they were safe.
他一口气喝完了那一大杯。	He emptied the glass at on draft.
他一口气喝了一品脱牛奶.	He drank a pint of milk in one go.
他一口气吹灭了蜡烛。	He blew out the candles with a single puff.