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Travel, which was once either a necessity or an adventure, has become very largely a commodity, and from all sides we are persuaded into thinking that it is a social requirement, too.

旅行，曾经是一种必需品或一种冒险，现在在很大程度上已成为一种商品，从各个方面我们都被说服认为这也是一种社会需求。

— Jan Morris 简·莫里斯