重点讲解：
1. keep track of
跟上…的进展；掌握…的最新消息；
eg. With eleven thousand employees, it's very difficult to keep track of them all...
对于一支 1。1 万人的员工队伍，很难及时了解到所有有人的动态。
eg. It's hard to keep track of time in here.
在这里很容易忘了时间。
2. pull a stunt
冒险；逞能；干傻事；
eg. The days when they needed to pull publicity stunts to get noticed are long gone.
他们靠作秀出名的日子早已过去。
eg. Don't ever pull a stunt like that again.
别再耍那样笨拙的把戏了。
3. take one's word for it
相信…的话；…说的是真话；
eg. You'll buy nothing but trouble if you buy that house, take my word for it.
你要是买那栋房子只会买来麻烦，我说的都是真的。
eg. Fool that I was, I took his word for it.
我真傻，竟然相信他的话。