become blackened from frost- bite
... 适合饮用的淡水 fresh water suitable for drinking 因为冻伤变黑了 become blackened from frost- bite 给我们这里的生活列出了规矩 set out the framework for our life here ...
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become blackened from frost- bite
因冻伤而变黑
以上为机器翻译结果，长、整句建议使用 人工翻译 。