homeland air defense
常見例句
- 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;
人民解放軍空軍成立於1949年11月11日，主要任務是 組織國土防空， 保衛(wèi)國家領空和重要目標的空中安全； 返回 homeland air defense