The black color of tenorite explains why the statue got darker over time, forming a dark brown color.

黑铜矿的黑色解释了为什么女神像这些年来颜色越来越暗，呈现出深棕色。

Then, further chemical reactions occurred when sulfur in the atmosphere reacts with water.

接下来，当周围空气中的硫与水接触时，又发生了进一步的化学反应。

Sulfur comes from natural processes such as volcanic eruptions, but also from man-made emissions from boats, cars, airplanes and factories.

硫来自火山喷发等自然过程，但船舶、汽车、飞机和工厂的人为排放也会产生硫。

When sulfur dioxide in the atmosphere reacts with water, it produces sulfuric acid.

当空气中的二氧化硫与水发生反应时，就会产生硫酸。

Sulfuric acid forms green minerals with copper oxides, so the sulfuric acid in the atmosphere made the state green over time.

硫酸和氧化铜发生反应，生成了绿色的矿物质，就这样，随着时间的流逝，周围空气中的硫酸将自由女神像变成了绿色。

Added to that, chloride from the sea spray surrounding Ellis Island where the statue is located made the statue even greener.

此外，自由女神像所在的埃利斯岛四周海浪中的氯化物让女神像的颜色变得更绿。

The statue stayed this way for over 100 years because the exposed copper is now oxidized and stable, but the statue wouldn't be the same anywhere else.

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