I was following a train of thought of my own.

我刚才在顺着自己的思路想问题。

The best method to cope with these issues is to fight with good preparation as well as tidy up a train of thought calmly to answer as easily as possible.

应付这类问题的最好情况就是有备而战，冷静地整理好思路并尽量从容回答。

A succession of ideas; a train of thought.

观念，思想相继而来的思想；一串想法。