很久以前，交通不便。就是有这么一些人，他们不愿意收到交通，地理的限制，一马当先，游历四海，成为著名的旅行家。张骞就是这样的一个人。他走过的路，今人叫做：丝绸之路。 Long ago when transportation wasn’t advanced, a group of people defied the limitations of transportation and geography. They set out for far, and...
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