Paper, printing and gunpowder Will head from east to west,
紙 印刷術和火藥 從東方傳入西方
All keys to the future of mankind.
是打開人類未來之門的鑰匙
But at the same time, a killer is on the loose,
但與此同時 一個致命的殺手還逍遙法外
That'll wipe out up to half of Europe's population.
它將奪去歐洲約一半人的生命
Mankind battles an enduring enemy: disease.
它就是人類永遠的敵人: 疾病
Issyk kul, a trading post, midway between Europe and Asia.
伊塞克湖 是亞歐途中的一個商棧
Genghis Khan has been dead for more than a century,
成吉思汗一個多世紀前就已去世
But his empire continues.Along its trade routes, a deadly traveler.Bacteria.
但他的王朝還在延續 在這條貿易商路上 還有一位致命行者 細菌
For three and a half billion years,Virtually every corner of the earth has been covered By these micro-organisms.
35億年間 這些微生物幾乎覆蓋了 地球上每一個角落
Our own bodies contain more bacterial cells Than human cells.
我們體內的菌細胞數量 甚至超過了人類細胞數量
Most are harmless,many are essential,But these have the power to kill.
大部分菌細胞是無害的 許多甚至是必不可少的 但這些細菌卻帶有致命的殺傷力