| 单词 | 指示剂 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔cochineal〕A red dye made of the dried and pulverized bodies of female cochineal insects. It is used as a biological stain and as an indicator in acid-base titrations.胭脂红：由雌胭脂虫虫体干燥并研成粉末制成的一种红色染料。用作生物着色剂和酸基滴定指示剂美国传统〔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 |
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