另一些物质看起来是经过极冷表面的化学反应生成的。
Other minerals look like what is produced by chemical reactions that occur on very cold surfaces.
因此，解决这个问题的最好方法之一，只有利用微生物了。微生物就是一座座完美无缺的微型工厂，如果经过合理设计，所有的化学反应过程都可以在微生物细胞内进行。
One of the best solutions to the drawbacks, therefore, seems to be microbes, which are perfect little factories because they can be engineered to perform practically any chemical reaction.
经过了20年的光阴，旧填充物表面有95%的汞元素已经发生了化学反应，它变成了黑辰砂(beta - mercury sulfide)，一种黑色的固体。
After two decades, 95 percent of the elemental mercury on the surface of a filling had gone through a chemical reaction. It became beta-mercury sulfide, a black-colored solid.
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