名词
中文翻译：旅行费用同义词
同义词：
['travel expenses', 'travel cost']
例句：
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1. We need to plan our trip carefully to avoid unexpected travel expenses.
我们需要仔细计划我们的旅行，以避免意外的旅行费用。
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2. The airline offered a discount on the ticket price for those who booked in advance.
航空公司为提前预订的乘客提供了票价折扣。
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3. The family decided to save up their travel expenses before planning their next vacation.
这个家庭决定在计划下一次假期之前先存好他们的旅行费用。