並前往https://books.google.com.tw/books?id=bIOWI5sqUIYC&pg=PA39&lpg=PA39&dq=loop&source=bl&ots=BlZsctJNDq&sig=ACfU3U1OyiSmVkbD3Sx2mW-MXIBlVZmHHw&hl=zh-TW&sa=X&ved=2ahUKEwiezLPJnJz-AhWuxQIHHQl4DfsQ6AF6BQjzAhAD