Definition
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before
Before refers to a time that precedes a particular event or point in time.
在特定事件或时间点之前的时间。
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She always wakes up early before work.
她总是在上班之前早起。
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We need to leave before it gets dark.
我们需要在天黑之前离开。
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Please finish your homework before dinner.
请在晚餐之前完成你的作业。