Twelve hours later she was all smiles again.

　　十二小時(shí)之后，她又喜笑顏開(kāi)了。

　　Twelve enemy fighters had been brought down.

　　有十二架敵方的戰斗機被擊落。

　　After twelve days at sea, they sighted land.

　　在海上航行十二天后他們看到了陸地。