1831年底，整个欧洲霍乱流行，黑格尔也没能幸免。
At the end of 1831, cholera spread in Europe and Hegel couldn't survive it.
伦敦的泰晤士河曾因污染而变成了一条无生命的河流并引发了霍乱等疾病。而现在，它已经是欧洲最洁净的河流之一。
The Thames had been polluted for fifty three years before its cleaning-up, while (polluted) Yangtze River has only waited for twenty years for pollution control, at the most.
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