1.backed by 由...支持
They're backed by allied warplanes and tanks.
他們受到盟軍戰機和坦克的掩護 。
2.second-in-command 二把手
That airstrike was aimed at killing al-Qaida's second-in-command, but he was not present at the time.
美軍那次襲擊行動的目的是消滅基地組織的二號人物,不過他當時并沒有在村子里 。
3.air strike 空襲
A senior defence official said last night that they would continue the air strikes.
一位高級國防官員昨晚說他們將繼續實施空襲 。
4.missile attack 導彈襲擊
A missile attack by a US drone aircraft has killed at least 15 people in north-west Pakistan, officials say.
美國一艘無人戰機在巴基斯坦西北部進行導彈襲擊,造成至少15人死亡 。