We don't go around doing our own cases.

　　我們不會擅自去接自己的案子。

　　How would we go about doing that?

　　我們會怎么做呢？

　　He wanted to go on doing chemistry all his life.

　　他愿繼續一輩子從事化學工作。

　　What a user can do and how they go about doing it.

　　用戶將做什么？他們將如何做？

　　But he did not know exactly how to go about doing that.

　　但是，他并不確切的知道如何去做這件事。

　　Please go on doing the same exercise.

　　請接著做這同一個練習。