1.rip up 撕碎,撕毁
If we wrote I think he would rip up the letter.
如果我们写信的话,我想他会把信撕得粉碎
。2.reconnaissance 侦察,事先考查
The squadron flew on a reconnaissance mission.
这支空军中队执行一项侦察任务
。3.take off 起飞
You can watch aircraft take off or land at close quarters.
你可以近距离地观看飞机起飞或降落
。4.usher in 领进,引进
With trends like this, the Age of the Internet could usher in an era of unprecedented citizen enlightenment.
有了这样的发展趋势,互联网时代将有可能迎来公民空前觉醒时期的到来
。5.scope out 开拓
They will also scope out another new field.
他们还将要开拓一个新的领域
。