短语
中文翻译：离题
同义词：
['off-topic', 'not onpoint']
例句：
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1. He wastalking about the weather when he should havebeen discussing the project.
他本应该讨论项目时，却开始谈论天气。
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2. Shewas trying to explain the concept of gravitybut ended up talking about the stars.
她试图解释重力的概念，但最后却说到了星星。
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3. The meeting was supposed to focuson budgeting, but they spent mostof the time discussing the latest technology.
会议本应专注于预算，但他们大部分时间都在讨论最新的技术。