1.military vehicle 军用车辆
例句:Establishment of the spectrum of the military vehicle transmission elements
军用车辆传动系零件载荷谱的建立
2.open-air 露天的
例句:Is the swimming pool here open-air or indoors?
这儿的游泳池是露天的还是室内的?
3.wrap up 圆满完成
例句:Let's wrap up the meeting before 5 o'clock.
咱们五点以前散会吧。
4.undercover agent 卧底
例句:Three years ago, a little painting caused big trouble for undercover agent Bob Wittman.
三年前,一幅小小画作给卧底鲍勃·惠特曼带来了大麻烦。