adj.切向的，切线的，正切的，稍微沾边的，离题的，不相干的

The discussion veered off into a tangent about the history of the city.
讨论转向了一个关于城市历史的旁支话题。
His response was somewhat tangential to the question asked.
他的回答与所问的问题有些偏离。
They kept getting sidetracked by tangential issues during the meeting.
在会议中，他们不断被一些边缘问题分散注意力。
The article had a few tangential paragraphs that didn't contribute much to the main argument.
这篇文章有几段内容较为外围，对主要论点贡献不大。
Her thoughts wandered off on a tangent, contemplating the stars above.
她的思想游离到一边，沉思着天上的星星。
The detective's investigation took a tangential turn when new evidence emerged.
当新的证据出现时，侦探的调查走向了一个意想不到的方向。
His tangential approach to problem-solving often leads to innovative solutions.
他那种偏离常规的解决问题方式常常能带来创新的解决方案。
The lecture touched upon several tangential topics before returning to the main theme.
演讲在回到主题之前涉及了几个相关但不直接的话题。
The book's introduction was quite tangential, making it difficult to grasp the main topic at first.
这本书的引言相当偏离主题，一开始让人难以把握核心内容。
Our conversation took a tangent as we started reminiscing about old school days.
我们的谈话转到了回忆旧时学校的日子，偏离了原本的话题。