Over the centuries, the intrepid trailblazers mapped rivers, built monuments, and explored new terrain using tools such as a compass, sextant, and telescope.

• 历史已经越过数个世纪，那些无惧无畏的开拓者利用手中的工具，比如指南针、分仪和望远镜，披星戴月、山涉水，敢于对未知世界的探索，已经修建了一座座的历史丰碑。