noun🔗Share石蕊， litmus试剂 A dyestuff extracted from certain lichens, that changes color when exposed to pH levels greater than or less than certain critical levels."The science teacher used litmus paper to test if the liquid was an acid or a base, as the paper turned red in acids and blue in bases. "这位科学老师用石蕊试纸来测试这种液体是酸性还是碱性，因为试纸在酸性液体中会变成红色，在碱性液体中会变成蓝色。chemistrysubstancematerialcolorscienceChat with AIVocabulary GamePractice Reading
noun🔗Share石蕊，石蕊试纸 A simple test of acidity in a liquid using litmus, usually in the form of litmus paper."The science student used litmus paper to check if the liquid was an acid. "那位理科学生用石蕊试纸来检验这种液体是不是酸性的。chemistryscienceChat with AIVocabulary GamePractice Reading
noun🔗Share石蕊试纸，试金石 A simple test of any attribute; a litmus test."The ability to stay calm under pressure is a litmus test for success in this demanding job. "在这种高压工作环境下，保持冷静的能力是衡量能否成功的试金石。attitudequalityChat with AIVocabulary GamePractice Reading
