no-fly zone
noun/ˌnəʊ ˈflaɪ zəʊn/
/ˌnəʊ ˈflaɪ zəʊn/
- an area above a country where planes from other countries are not allowed to fly, especially during a war
（尤指战时）禁飞区 - Fighter planes are being sent to enforce the UN no-fly zone.
正派战斗机到联合国禁飞区执行禁飞任务。
- Fighter planes are being sent to enforce the UN no-fly zone.