图片发自简书App
1.make for =head for 走向；冲向；
to go in the direction of a particular place
2.Air force 空军
the part of a country's military organization that uses planes to fight
army陆军
navy海军
3.be a great danger to someone/something
Balloon can be a great to aircraft
4.spy :to secretly collect information about an enemy country or an organization you are competing against
Spy on 暗中监视某人/某地
5.keep /lose track of :
to pay attention to someone or something, so that you know where they are or what is happening to them, or to fail to do this
保持/失去联系（线索）
6.keep watch on 密切关注
7.make out :to be just able to see or hear something
辨认出
8.give it a shot =have a try
9.go wrong =backfire 事与愿违
10.misunderstanding =get sb wrong 误会
