单词：soil sourness
soil sourness的用法和样例：
例句
- We spread lime where the soil was sour.土壤酸性大的地方我们就撒上石灰。
- Or,once in the incinerator the resulting ash will be rich in carbonates,good for making the soil less acidic.这些沙子一旦经过焚烧，剩余的灰烬就会富含碳酸盐，是降低土壤酸性的好东西。
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