| 词汇 | litmus paper |
| 释义 | litmus paper 1 ENTRIES FOUND: litmus paper (noun) litmus paper /ˈlɪtməs-/ noun litmus paper /ˈlɪtməs-/ noun Learner's definition of LITMUS PAPER [noncount] technical : special paper that is used to test how much acid is in a solution ◊ Litmus paper turns red in acid solutions and blue in alkaline solutions.石蕊试纸（遇酸性溶液变红，遇碱性溶液变蓝） |
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