人不可能一辈子只追求一个目标（after)
People can't just chase after one target throughout his life.
这个沙发坐着舒适,还可以当床用 （ACT）
This sofa not only let you feel comfortable for sitting,it also acts as a bed if you expand it.
有了网络之后,很多人不再费心写书信了（bother)
Since there is internet widely available,people don't bother to write letter any more.