每次使用指南针时，检查地图的上的方位。
中国是第一个在海船上使用指南针的国家。
China is the first country using the compass on seagoing ships.
中国人知道使用指南针，比欧洲人早好几个世纪。
The use of the compass was known to the Chinese centuries before the European.
还要说的是，这里的印第安人在使用指南针方面要比他们北方邻居强多了。
They are much more familiar with the points of the compass than their more northern neighbours.
还要说的是，这里的印第安人在使用指南针方面要比他们北方邻居强多了。
They are much more familiar with the points of the compass than their more northern neighbours.
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