重点讲解：
1. each other 彼此；互相；
They looked at each other and laughed.
他们彼此看了看便笑了起来q&QK;4Hh@mu。
2. in fact 事实上，其实；
In fact, those people have been promoted.
事实上，那些人已经升职了WiFOHo&-zQI]。
3. tell apart 区分；区别；辨别；
Even when magnified, the two organisms are difficult to tell apart.
即使放大之后，这两种有机体也难以区分o;x,ZGpMd)。
4. do away with 消除；终止；废除；
I want them to do away with this barbarous custom.
我希望他们废除这种野蛮的习俗gw!,TbevuT1],&^x。