That morning the river was tarnished silver, for it was cloudy and cold.
那天早上，河水被染成了黯淡的银色，因为天气多云而寒冷。
The silver candlesticks were tarnished and dusty.
银烛台都发乌了，满是灰尘。
If the silver is badly tarnished, you may need to reheat the baking soda and water mixture, and give the silver several treatments to remove all of the tarnish.
如果这银器暗淡的很厉害的话，你需要重新加热下小苏打和水的那个混合物，反复刚才的步骤几次就可将所有暗沉去除了。
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