英语词汇on the alert是什么意思，on the alert的用法、释义、翻译、读音、例句、短语词组-英汉汉英翻译词典-觉斋网

单词	on the alert
释义	WORD PARTNERSHIP 词语搭配〔alert〕be on the alert for traffic signals 密切注意交通信号英汉大词典〔alert〕bird watchers on the alert for a rare species.看守者人密切注意稀有鸟类美国传统
随便看	spark technique spark telegraphy spark time lever spark timer spark timing spark transmitter spark trap spark working spark-gap spark-gap modulation spark-gap modulator spark-gap oscillator spark-producing spark-quenching circuit spark-quenching condenser spark-quenching device sparked sparked sparked sparker sparker survey sparking sparking sparking sparking alloy

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