| 单词 | litmus |
| 释义 | litmus /'htmas; Hitmas/ n blue colouring-matter that is turned red by acid and can then be restored to blue by alkali. 石蕊(一种蓝色素，遇酸变红，再遇碱恢复蓝色 '~paper, paper stained with ~ and used as a test for acids and alkalis. 石蕊试纸(试验酸和余者)。 |
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