另外，在地表水中存在一种弱酸，它是碳酸，而不是硫酸，而且是能帮助溶解岩石的碳酸。

Also, in surface water, there is a weak acid, carbonic acid, not sulfuric acid, but carbonic acid that helps dissolve the rock.

youdao

因为我们喝了能溶解牙齿的东西，所以一定会伤害到我们的牙齿，这种想法真是无稽之谈。

The idea that any substance which can dissolve teeth must therefore damage our teeth if we drink it is nonsensical.

youdao

因为这些碳酸盐能被溶解在酸中，所以这写小丘的存在表明这些没那么酸并且适宜生命存在的水可能在火星流淌。

Since these carbonates dissolve in acid, the persistence of these mounds indicates that water perhaps less acidic and more favorable for life might have once flowed across Mars.

youdao