並前往https://ruby4089.pixnet.net/blog/post/151389724-%E6%A1%83%E5%9C%92%EF%BD%9C21%E9%87%91-%E5%B0%8F%E7%81%AB%E9%8D%8B-%E8%87%AD%E8%87%AD%E9%8D%8B