1.at the very least 至少
At the very least, he's found a program that works wonders for him.
至少,他找到了對自己有效的一個方案
2.set back 使……受挫折
The cause of free trade has also been set back.
自由貿易的促成也會受挫
3.back on track 重回正軌
He said countries must work together to get the global economy back on track.
他說,各國必須共同努力,使全球經濟回到正軌
4.drone aircraft 遙控無人駕駛飛機
The United States says it has carried out its first attack in Libya, using an unmanned drone aircraft.
美國稱他們已經使用無人機對利比亞發動了首次襲擊