| 单词 | degree of acidity |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔acid-base indicator〕A substance that indicates the degree of acidity or basicity of a solution through characteristic color changes.酸碱显示剂：通过特定颜色变化来显示溶液中酸性或碱性程度的物质美国传统 |
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