| 单词 | 酸碱 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔WASH〕This lotion cleanses your skin deep down, while preserving its natural pH balance. 这种洁肤液深入清洁皮肤，同时保持皮肤自然的酸碱平衡。朗文写作活用〔WEATHER〕When acid rain falls, it affects the pH balance of the soil. 降酸雨会影响土壤的酸碱平衡。朗文写作活用〔acid-base equilibrium〕The state that exists when acidic and basic ions in solution exactly neutralize each other.酸碱平衡：溶液中的酸离子和碱离子正好互相中和的状态美国传统〔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〔alkaline〕A pH test measures the acidity or alkalinity of a substance.pH值测试可检测物质的酸碱度。柯林斯高阶〔alkalinity〕A pH test measures the acidity or alkalinity of a substance.pH值测试可检测物质的酸碱度。外研社新世纪〔crystal violet〕A dye derived from gentian violet that is used as a general biological stain and an acid-base indicator.结晶紫：一种从甲基紫衍生出的染料，被用作普通的生物染色剂和酸碱指示剂美国传统〔monobasic〕Having only one hydrogen ion to donate to a base in an acid-base reaction; monoprotic.一（碱）价的：在酸碱反应中只有一个氢离子转移到碱上的；一碱价的美国传统〔neutrality〕Pure water is neutral with a pH of 7.纯水是中性的，酸碱度为7。柯林斯高阶〔neutralization〕Chemistry A reaction between an acid and a base that yields a salt and water.【化学】 中和：生成盐和水的酸碱之间的反应美国传统〔neutral〕Of or relating to a solution or compound that is neither acidic nor alkaline.酸碱平衡的：溶液或化合物非酸性也非碱性的或与之有关的美国传统〔pH〕Most unpolluted rainwater has a pH of around 5.0.大部分未受污染的雨水酸碱度为5.0左右。麦克米伦高阶〔strength〕What's the scale that's used to compare the strength of acids and alkalis?用哪一标准来比较酸碱度？外研社新世纪 |
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