英语词汇“blue alert”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	blue alert
释义	blue alert noun : the second stage of alert (as for a threatened air attack or an approaching storm) during which emergency preparations are carried out according to plan; also : the signal for this — compare red alert, white alert, yellow alert
随便看	single-phasing single photon emission computed tomography single-pole switch single premium single-punch single-rail crane single-rail track circuit single rhyme single-rivet singles singles singles bar singles court single-screw single-seater single-seed cucumber single shear single-shear steel single-shot single-shot pistol single-side-band modulation single-side-band transmission single-space single spanish burton single spruce

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