any textile woven with artificial or natural filament fibers can be called silk in a broad sense. The silk woven by pure mulberry silk is especially called "real silk".
the famous German geographer Ferdinand von Richthofen named it "Silk Road" in 1877.丝绸之路the SilkRoaD.起源于公元前1世纪,是一条具有重要历史意义的国际贸易路线。由于丝绸在这条线路的贸易中占有很大比重,1877