英文:He wasn't good navigator, so it is necessary that the coastline remain in sight as he moved from one harbor to the next.
中文:他不擅航海,所以当他从一码头驶到另一码头时,得一直沿海岸线航行。
英文:Danish navigator and explorer who in1728 sailed through the Bering Strait, proving(though he did not realize it at the time) that Asia and North America are separate continents.
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