air umbrella
例句
用作名词(n.)- Mayday!Mayday!require air support immediately!呼叫空中支援，呼叫空中掩护。
- Air Support Inbound at your location.空中支援进入了你的地区。
- Mayday!Mayday!require air support immediately!呼叫空中支援，呼叫空中掩护。
- For this operation we need plenty of air cover,ie protection by military aircraft.为进行这次军事行动，我们需要充足的空中掩护。
THE END
