Goppa code

例句：

1. 1. I'm not sure what the Goppa code is, but it seems like a secret language.
   我不确定Goppa代码是什么，但听起来像是秘密语言。
2. 2. The Goppa code was used by the ancient Greeks to communicate with each other.
   古希腊使用Goppa代码来互相交流。
3. 3. In the movie, the Goppa code was used as a means of communication between the characters.
   电影中，Goppa代码被用作角色之间的沟通手段。