translation.en: In 1991, a 50-year agreement was entered into that stops any exploitation in Antarctica, and this agreement could be altered, changed, modified, or even abandoned starting in the year 2041.
translation.zh: 在 1991 年，一个 50 年条约被签署实施 禁止一切对南极的开发利用， 但是从 2041 年开始 这个条约就可以被 修改，变换，改进，甚至是被摒弃。