This was not a big problem from 16th-century sailors, of course, and the Mercator projection remains popular to this day.
当然，对于16世纪的水手来说，这不是一个大问题，如今仍然很普遍。
This was not a big problem from 16th-century sailors, of course, and the Mercator projection remains popular to this day.
当然，对于16世纪的水手来说，这不是一个大问题，如今仍然很普遍。
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