突然扯到題外; 突然改變行徑Now, let's stick to the point. Let's not go off at a tangent, as we did last week. 讓我們抓住要點吧, 不要向上周那樣扯到題外。Just as we thought we were getting near a solution of the problem, he went off at a tangent and started talking about something else. 當我們認為這個問題快要得到解決時, 他突然扯到題外, 而開始其它的事情。