You can use chemistry to reverse the tarnishing reaction, and make the silver shiny again!
你可以同样用化学方法来逆反这种“暗淡反应”，让银器们变回亮丽！
Various reverse transcriptase–polymerase chain reaction (RT–PCR) methods are available but are of variable sensitivity.
有各种逆转录酶聚合酶链反应(扩增核糖核酸基因组RT–PCR)检测试验方法，但灵敏度各不相同。
Various reverse transcriptase–polymerase chain reaction (RT–PCR) methods are available but are of variable sensitivity.
有各种逆转录酶聚合酶链反应(扩增核糖核酸基因组RT–PCR)检测试验方法，但灵敏度各不相同。
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