我们的读者中没有多少人会选择在如此低温下游泳，但在某些国家，冰泳已经流行了好几个世纪。
Not many of our readers would choose to go for a swim in such low temperatures, but in some countries, ice swimming has been popular for centuries.
为了让您初步体会可能产生的某些困难，我们将讨论几个突出的困难以及一些可能的解决方案。
Just to give you a taste of some of the difficulties that can arise, we'll discuss a few prominent ones and some potential solutions.
在某些极端情况下，你可能要和几个甚至是一群朋友断交。
In some extremes, you'll have to move away from old friendships or even groups of friends.
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