当叛军的补给困难时，他们两天后撤出了这个城市。
As their supplies dwindled, the rebels melted away after just two days.
后勤补给困难， 地形不详， 气候恶劣。
There were many difficulties in supply, terrain and weather.
当他们准备好所需的补给后，这些淘金者随即面临进入加拿大的极端困难的行程。
When they had gathered all the supplies, the gold seekers then faced the extremely hard trip into Canada.
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