"Tracking technology has ushered in a new ageofexploration," Mr. Hewson said.
“追踪技术开创了一个新的探索时代，”休森说。
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Thirty years on from this journey Walley Herbert is the last link between the explorers from the heroic ageofexploration and our modern day adventures.
With vessels numbering in the hundreds and crewmen in the tens of thousands, Zheng took to the seas nearly a century before the European ageofexploration began in earnest.