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问题: 请求大家的帮忙!做下这道题~!

Why is carbonic acid effective in weathering
parent soil rock,but not an important factor
in lake acidification?

解答:

为什么碳酸对于成土母岩的风化有作用,而在湖泊酸化中却不是一个重要因素呢?

这句话应该说并不特殊,只是parent soil rock可能令人迷惑,
风化的肯定是岩石,而不是土壤,所以觉得翻成“成土母岩”或“土壤母岩”都无不可。

作为参考,附上一段说明:

Parent rock refers to the original rock from which something else was formed. It is mainly used in the context of soil formation where the parent rock will have a large influence on the nature of the resulting soil.