zài / gǔ dài / sī chóu zhī lù / shàng / de / shāng rén / shì / shā mò / shēn chù / wéi / jué yù在古代,丝绸之路上的商人视沙漠深处为绝域。In ancient times, merchants on the Silk Road regarded the deep desert as an unreachable land.