牛双双 Camellia，中学生物教师兼班主任。北京航空航天大学硕士，16年一线教学及生物教研组长经验，深耕国际生物课程，精通 IGCSE / A Level / IB / AP / DSE 生物课程，熟悉各体系考纲与评分标准。多年指导学生获 IBO（国际生物奥赛）、BBO（英国生物奥赛）金奖，所带学生成功录取顶尖名校（如剑桥、帝国理工、UCL等）。
Camellia Niu, Secondary School Biology & Homeroom Teacher, Master's degree from Beihang University. With 16 years of front-line teaching experience and as the head of the biology teaching group, she has deep expertise in international biology curricula, including IGCSE, A Level, IB, AP, and DSE. She is thoroughly familiar with the syllabi and marking schemes of each programme. Over the years, she has guided numerous students to win gold medals in the IBO and BBO, and her students have gained admission to top universities such as Cambridge, Imperial College London, and UCL.
