| 单词 | air cover |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔cover〕The planes provided air cover for the attack.这些飞机为攻击提供空中掩护。牛津搭配〔cover〕They said they could not provide adequate air cover for ground operations.他们声称无法为地面军事行动提供充分的空中掩护。柯林斯高阶〔cover〕They said they could not provide adequate air cover for ground operations.他们说无法为地面行动提供足够的空中掩护。外研社新世纪〔umbrella〕Air cover, especially during a military operation.掩护幕：空中掩护，尤其是在军事行动期间美国传统 |
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