Case Study on Two English translation versions

It is shameful to say that I am an English major, as I am not experienced to deliver native English expression in many cases except some daily usage. Most of my colleagues complain that it takes quite a lot of effort to deliver one excellent English translation job. How come this situation? Are we not so smart to learn it well? Are we too lazy to use it? Let it be, but we really need to do it well. I pick up two versions of English translation job, one is translation, and the other is the edited one.