並前往https://books.google.com.tw/books?id=rty4EbgL2WgC&pg=PA143&lpg=PA143&dq=loop&source=bl&ots=YY56c6Huws&sig=ACfU3U1VP81B6a-0FanypzKhbRtc6uZEEA&hl=zh-TW&sa=X&ved=2ahUKEwiezLPJnJz-AhWuxQIHHQl4DfsQ6AF6BQj8AhAD