求翻译：西汉的时候，张骞出使西域，开辟了陆上的丝绸之路 ，加强了中原与西北甚至与欧洲的交往。如今中国的丝绸早已销往国内外，是中国的特色标志之一是什么意思？

When the Western Han Dynasty, Zhang Qian the Han Dynasty, the Silk Road opened up land to strengthen the Central Plains and the Northwest and even the European exchanges. Today, China's silk has long been sold at home and abroad, is one of the hallmarks of China's characteristics

When the Western Han, bestows opened up the western regions and the land of the Silk Road, Central Plains and the northwest and even strengthen its contacts with Europe. Now that the Chinese silk has long been sold to domestic and international, is one of the symbols of China's characteristics

Western Han Dynasty's time, Zhang Qian goes abroad on a diplomatic mission western region, opened on land Silk Road, strengthened the area south of Yellow River and northwest even with Europe's contact.Now C

When Western Han dynasty, Zhang Qian mission to the western regions, opening up the Silk Road on land, strengthening central and Northwest and European exchanges. China silk already are sold out now, is one of the characteristics of Chinese symbols