noun🔗Share专注，集中，浓度 The act, process or ability of concentrating; the process of becoming concentrated, or the state of being concentrated."High concentrations of pollen in the air can cause allergy symptoms. "空气中高浓度的花粉会导致过敏症状。abilityprocessmindphysiologyChat with AIVocabulary GamePractice Reading
noun🔗Share专业，主修方向 A field or course of study on which one focuses, especially as a student in a college or university.""At university, she chose two concentrations: biology and chemistry." "在大学里，她选择了两个专业方向：生物和化学。educationChat with AIVocabulary GamePractice Reading
noun🔗Share浓度，含量 The proportion of a substance in a whole."The doctor checked the patient's blood to measure the concentrations of different vitamins and minerals. "医生检查了病人的血液，以测量不同维生素和矿物质的浓度和含量。substancechemistryamountChat with AIVocabulary GamePractice Reading
noun🔗Share记忆游戏，配对游戏 The matching game pelmanism."The children's matching game required careful concentrations to find the pairs. "孩子们玩的这个配对游戏需要非常专注才能找到相同的牌。gameentertainmentChat with AIVocabulary GamePractice Reading
