游客在旅行时必须特别注意季节时日和海拔的高度，准备适当的保暖衣物。
Therefore, travelers should pay attention to the season and altitude in order to prepare enough clothes.
波罗的海诸国、斯堪的那维亚半岛和和俄罗斯即将转凉，不过一些保暖衣物就足够应付了。
The Baltic states, Scandinavia and Russia will be cooling down, but it’s nothing a few warm layers can’t handle.
但是在崎岖地势、苍茫大雪、没有食物、很少保暖衣物的条件下要一直保持希望谈何容易。
But it was hard to stay hopeful lost in rugged terrain, in heavy snow, with no food and few warm clothes.
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