我被打断了,思路也断了。
I was interrupted and lost my ___train ___of ___thought.
让我们跟着作者的思路来理解这个复杂的章节。
Let's follow the author's ___train ___of ___thought through this complex chapter.
她哲学性的思考脉络让学生们难以掌握。
Her philosophical ___train ___of ___thought was difficult for the students to grasp.