公元17世纪前后，在瑞典中部的达拉娜地区，人们大多以伐木为生。

Before and after the early 17th century, in central Sweden dara na region, most people make a living by logging.

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考古学家于瑞典中部发现刻有罕见北欧古文的石块，这些北欧古文使用于北欧海盗时期以前。

Archaeologists in central Sweden uncovered part of a stone carved with a rare runic character. These Scandinavian characters were used before the Viking era.

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看到这几张气温图，你可以想像这个结论对墨西哥，美国，加拿大中部，瑞典，还有俄罗斯北部的许多居民来说有多不可思议。

Looking at these maps, though, you can imagine how surprising that conclusion might have been to many residents of Mexico, the United States, central Canada, Sweden, or northern Russia.

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