在格凌兰、加拿大、西伯利亚的部分地区，狗仍然被用来拖雪橇。目前，还没有其它运输方式能取代它们。
In parts of Greenland, Canada, and Siberia, dogs are still used to pull sleds. No other means of transportation has yet replaced them.
布朗一边做一边提醒我们驾驶狗拉雪橇是一种古老的运输方式，而狗是专家。
As he worked, Brown reminded us that mushing is an ancient form of transportation, and dogs are the experts.
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