homeland air defense
常见例句
- The Air Force of the PLA was established on November 11, 1949. Its primary missions are organizing homeland air defense to protect the territorial air, and providing air security for key facilities;
人民解放军空军成立于1949年11月11日，主要任务是 组织国土防空， 保卫国家领空和重要目标的空中安全； 返回 homeland air defense