universal indicator
noun /ˌjuːnɪˌvɜːsl ˈɪndɪkeɪtə(r)/
/ˌjuːnɪˌvɜːrsl ˈɪndɪkeɪtər/
(chemistry- a substance that changes colour when another substance touches it, indicating whether it is an acid or an alkali
通用指示剂（通过颜色变化显示物质的酸碱性）
| 词汇 | universal indicator |
| 释义 | universal indicatornoun /ˌjuːnɪˌvɜːsl ˈɪndɪkeɪtə(r)/ /ˌjuːnɪˌvɜːrsl ˈɪndɪkeɪtər/ (chemistry
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