名词
中文翻译：上火车
同义词：
['take the train', 'board the train', 'get on the train']
例句：
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1. She had to uptrain at the station before leaving for her trip.
她必须在出发前在车站上车。
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2. The children were excited to uptrain and explore the new city.
孩子们兴奋地登上火车，探索这个新城市。
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3. Uptrain is a common practice in many countries where people travel by train.
上火车是许多国家旅行者常见的做法。