On the premise of en-suring military security, the armed forces have opened 5 military airports, more than 200 military rail lines, 30 oil pipelines, 70 com-munication lines and more than 100 rear area warehouses for civilian use.是什么意思_On the premise of en-suring military security, the armed forces have opened 5 military airports, more than 200 military rail lines, 30 oil pipelines, 70 com-munication lines and more than 100 rear area warehouses for civilian use.在线翻译_英语_读音_用法_例句