重点讲解：
1. set foot on 踏上，涉足(某地) ；
No man has ever set foot on that rocky island; it's impossible to land there.
没人涉足那个岩岛，不可能在那儿上岸DIc*bNQ=p*。
2. how the heck （尤在迷惑或恼怒时用于疑问句中表示强调）到底，究竟；
How the heck we're gonna put some value on all these.
这些我们到底要付出多大的代价fF9][KeEaX|)593-]y。
3. in the first place 起初；一开始；
What brought you to Washington in the first place?
最初是什么让你来到华盛顿的？
4. work out 想出，得到(解决方法)；解(谜) ；
It took me some time to work out what was causing this.
我花了一些时间才弄清此事的起因=_d9~oVwk2j4gZb9。