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Questions and Answers
是什么时候
是什么时候
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什么时间
什么时间
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Study Notes
时间概念
- 什麼是時間？是什么时候和什么时间都是关于时间的概念
- 两个短语的区别在于：什么时候 stronger emphasis on the time of an action or event
- 什么时间更多地强调事件的时间长短或时间范围
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