NSA

例句：

1. 1. The NSA is responsible for protecting national security and privacy.
   国家安全局负责保护国家安全和隐私。
2. 2. The NSA has been accused of spying on foreign governments.
   国家安全局被指控对外国政府进行间谍活动。
3. 3. The NSA is working closely with other agencies to develop new encryption technologies.
   国家安全局与其他机构紧密合作，开发新的加密技术。