並前往https://cldmaths.edu.hku.hk/wp-content/uploads/2020/11/B2-18%E4%BB%A5%E5%85%A7%E7%9A%84%E5%8A%A0%E6%B8%9B%E6%B3%95%E6%87%89%E7%94%A8%E9%A1%8C%E5%B7%A5%E4%BD%9C%E7%B4%99%E5%86%8A.pdf
