Drivers must be on the alert for traffic signals.
驾驶员必须
意交通信号。
词条纠错
X
on the alert
生词本：
添加笔记：
提防；警
著；随时准备著
著；随时准备著The patrol police on duty are on the alert against any possible disturbances.
"值班巡警处于备状态,随时准备应付任何
生的骚乱。"
声明：以上例句、词性分类均由互联网资源自动生成，部分未经过人工审核，其表达内容亦不代表本软件的观点；若
现问题，欢迎向我们指正。
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相似单词
on sale, on schedule, on second thoughts, on show, on the air, on the alert, on the analogy of, on the average, on the basis of, on the battlefield,
译
