1.be prepared to: 准备做某事

If you give a hug to a stranger, be prepared to run very fast afterward.
而如果你给陌生人一个拥抱，那还是准备好抱完赶快跑吧。

If you plan to use this -- and it can be useful -- be prepared to take time to use it well.
如果您计划用它——而且它可能是实用的——要准备好花一些时间来 用好它。

I did this film because I believe that if we as a country are going to cause such disorder we must also be prepared to face the horrendous images that result from these events.
我创作这部电影的原因在于我相信如果我们这样的国家引起了如此大的混乱，那么我们也应该准备好去面对由此局面而产生的可怕的结果。

2.aim for: 瞄准；以……为目标

Trading operations in big banks aim for big profits because that is what the shareholders want.
大型银行的交易业务以高额利润为目标，因为这是股东想要的。

Aim for five to nine daily servings of all kinds of fruits and vegetables—especially these six superstars.
瞄准以各种水果和蔬菜做成的五到九道家常菜——尤其是下面的六个超级明星菜。

Above all, aim for things that are truly important to you, not what you think you ought to do or what others expect of you.
最重要的是，你要把那些对你真正重要的事情作为目标，而不是那些你认为自己应该做或者其他人希望你做的事。

3.shoot down: 击落；驳倒，否决

Japan had also threatened to shoot down the rocket with land-based batteries if it seemed to endanger its territory.
日本还威胁，若火箭有威胁日本领土的迹象，日本将用地面火力击落它。

He says the United States would only attempt to shoot down the rocket in the unlikely event it appeared to pose a direct threat to U.S. territory.
他说，美国只会在该火箭可能向美国领土发出直接威胁的时候试图将其击落，而这种情况发生的可能性不大。

4.can't wait to: 等不及做某事