酒店客人，特别是那些单独旅行的，处在陌生城市不熟悉的环境中，经常有很多时间需要填充。
Hotel guests, particularly those travelling alone, are in an unfamiliar space in a foreign city, and often have time to fill.
就连我的假期都花在旅行上，匆忙的上下飞机，到达新的城市，让自己沉浸在新的语言和文化中。
Even my holidays were spent traveling, jumping on and off planes, arriving in new cities, and immersing myself in new languages and cultures.
他说，一座座被升起的城市还有“星际旅行”中“时光倒流”旅行也许现在似乎庸俗，可至少它们表明人类拥有一个未来。
The elevated cities and the "Star Trek" voyages of yesteryear may now seem corny, but at least they show humanity has a future, he says.
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