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1. It is fairly clear that the sleeping period must have some function,
    很清楚,睡眠必然具有某种作用。

2. For men accustomed to eating seven-course dinners and sleeping between fine linen sheets at home, the change to the Alps must have been very hard indeed.
    对于过惯了一顿饭吃7道菜、睡亚麻细布床单的人来说,变换一下生活环境来到阿尔卑斯山山区,那一定是很艰难的。