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用清水漱口后,将一干净试管口放于下唇边缘,同时舌尖紧抵上颚或下颚门齿下方,再联系酸等的刺激或教师在实验前置一特鲜水果(最好是苹果或柑桔)于
After rinsing with water, a clean test tube mouth on the edge of the lower lip, while the tongue against the maxillary or mandibular incisors below the contact with acid and then stimulate or teachers in the experiment before a special fresh fruit (preferably apple or orange Orange) in