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Soldiers and police have been put on alert.
士兵和警方都已进入警戒状态。
柯林斯例句
Bombers were put on alert during the crisis.
危机时刻,轰炸机处于警戒状态.
互联网
Emergency services were put on alert.
应急服务时刻准备着.
英汉双解词典包含4367426条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。