The blue lines on the map represent rivers.
地图上的蓝线代表河流。
Thee blue lines on the map represent rivers.
地图上的蓝线代表河流。
Now we can look up and see the lines against a clear blue sky.
现在我们可以向上看，线条背衬着干净的蓝天。
Position the blue dots such that no lines overlap. How quickly can you solve it?
拖动蓝点，让所有线都不相交，看看你多久能解开？
Position the blue dots such that no lines overlap. How quickly can you solve it?
拖动蓝点，让所有线都不相交，看看你多久能解开？
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