丝绸很轻,且易卷,所以可以走陆路运输。
在中国,铁路是陆路运输的最大使用形式。
The railroad represents the biggest usage in the land transport in China.
因为你并不真正有计划,您的酒店住宿和你陆路运输。
You don't really have to plan your hotel accommodations and your land transportation.
And that was only possible because, besides using the sea, the shipping lanes for travel, which was much faster than overland travel, the Romans maintained roads.
之所以能达到这个数字,原因之一是走海路,用海洋航路运输,比陆路快得多,另一个原因就是修路。
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