Definition
To abruptly shift to a different topic of conversation or thought.
话题一转
During the meeting, he went off on a tangent about his weekend fishing trip.
在会议中，他突然开始谈论他周末的钓鱼之旅。
I tried to ask her about the project, but she went off on a tangent about her new pet.
我试着问她关于项目的事，但她突然开始谈论她的新宠物。
The teacher asked us to focus on the text, but she went off on a tangent about her youth.
老师要我们专注于课文，但她突然开始谈论她的年轻时光。