The senior tourists market is a kind of market with vast potentials, Its development is of very important social value.
老年旅游市场是一个具有极大潜力的市场，其开发具有重要的社会意义。
The senior tourists market is a kind of market with vast potentials, Its development is of very important social value.
老年旅游市场是一个具有极大潜力的市场，其开发具有重要的社会意义。
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