| 单词 | pyrogallol | 
| 释义 | pyrogallolnoun  py·ro·gal·lol  ˌpī-rō-ˈga-ˌlȯl  -ˌlōl;-ˈgȯ-   : a poisonous bitter crystalline phenol C6H6O3 with weak acid properties that is usually obtained by pyrolysis of gallic acid and used especially as a mild reducing agent (as in photographic developing)   | 
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