noun🔗Share磨牙, 臼齿 A back tooth having a broad surface used for grinding one's food."Maria chewed the tough steak carefully, using her molars to grind it into smaller pieces. "玛丽小心地咀嚼着那块难嚼的牛排，用她后面的**臼齿（磨牙）**把它磨碎。anatomyorganbodymedicinephysiologyChat with AIVocabulary GamePractice Reading
noun🔗Share摩尔浓度, 克分子浓度。 A unit of concentration equal to one mole per litre."The solution's molar concentration was 0.5 moles per liter. "这个溶液的摩尔浓度是每升0.5摩尔。chemistryamountChat with AIVocabulary GamePractice Reading
