铜博士可能不再适合试水西方经济。
Dr Copper may no longer be as good at taking the temperature of Western economies.
这些化合物能溶于水，并含有游离的半缩醛羟基，所以在碱溶液中能还原银离子和铜离子。
These compounds are soluble in water, and contains the hemiacetal hydroxyl free, so in alkaline solution can reduce silver ions and copper ions.
重金属污染，包括铅、锌和铜的污染可能正是由于把水从水源输送到用户的管道本身的腐蚀而引起的。
Heavy metal pollution, including lead, zinc, and cooper may be caused by corrosion of the very pipes that carry water from its source to the consumer.
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