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Let's begin with a cleaning tip:
先分享一個去污小妙招：
If you have some tarnished or corroded brass that you want to clean, an old brass candlestick for example,
如果你想要清除銅銹，例如銅燭臺，
you can use Coca-Cola, or any other cola soft drink, and that brass will come clean.
可以使用可口可樂或者其它可樂飲料，清洗后的燭臺光亮如新。
And if Cola is such an effective cleaner of corroded metal, what is it doing to the inside of your stomach?
如果可樂能有效清潔金屬銹斑，那么可樂對人體的胃會產生什么影響呢?
Cleaning with Cola on today's moment of science.
今日科學一刻：用可樂清洗物品
Cola cleans brass because it's mildly acidic.
可樂能清潔銅銹是因為可樂呈弱酸性。
Here's what happens: When brass or another metal alloy becomes tarnished,
經常遇到這種情況：當黃銅或其他金屬生銹時，
this means that there has been a chemical reaction between the oxygen in the air and one of the metals in the alloy.
是因為空氣中的氧氣和合金中的某種金屬發生了化學反應。
Oxygen atoms combine with metal atoms to form what's called an oxide, and this oxide is what makes the metal appear tarnished.
氧原子結合了金屬原子，形成所謂的氧化物。氧化物就是金屬銹。
譯文為可可英語翻譯，未經授權請勿轉載!
