litmus /'litmәs/ 📖 中文释义 n. 石蕊[化] 石蕊 🔗 释义中的汉语词 石蕊 📘 English Definition(英文释义) n. a coloring material (obtained from lichens) that turns red in acid solutions and blue in alkaline solutions; used as a very rough acid-base indicator ← litmopyrine L 字母词表 litmus blue →