Hague protocol

例句：

1. 1. The Hague protocol is a legal document that regulates international relations.
   海牙议定书是一份法律文件，规定了国际关系。
2. 2. The Hague protocol has been revised several times since its inception.
   自其诞生以来，海牙议定书已经修订过多次。
3. 3. The Hague protocol is considered one of the most important treaties in international law.
   海牙议定书被认为是国际法中最重要的条约之一。