zhè / mén / kè / zhǔ / yào / yán / jiū / yuán / zhuī / qū / xiàn / jí / qí / zài / jǐ / hé / xué / zhōng / de / yìng / yòng这门课主要研究圆锥曲线及其在几何学中的应用。This course mainly studies conic sections and their applications in geometry.