acidity
noun [ U ] uk/əˈsɪd.ə.ti/ us/əˈsɪd.ə.t̬i/
酸的含量,酸度;酸性
the amount of acid in a substance or in your stomach
This low pH level clearly shows the acidity of the soil here. 这里土壤的pH值很低,说明土壤呈酸性。
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