介词
中文翻译：在
同义词：
['within', 'within the scope of', 'in addition to']
例句：
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1. I am going to the store to buy some milk.
我打算去商店买些牛奶。
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2. The book is available in both English and Chinese editions.
这本书有英文和中文版两种。
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3. We need to be careful not to get lost in the crowd.
我们需要小心，不要在人群中迷路。