副词
中文翻译：在途中
同义词：
['on the trail', 'in transit', 'on the move']
例句：
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1.She decided to go hiking in the mountains during her vacation.
她在假期决定去山里徒步。
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2.The team is in trail for a week before they can make any decisions.
团队需要再待一周才能做出任何决定。
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3.The hikers were in trail for hours before reaching the summit.
登山者在山顶前走了几个小时。