查单词

on the alert

释义

单词时态

相关例句

Every country that advocates peace must be on the alert.(每一个主张和平的国家都必须提高警惕。)
After the TV news, most of the farmers were on the alert for the disaster.(电视新闻播出后，大多数的农民对这种灾害已经处于警备状态。)
Drivers must be on the alert for traffic signals.(司机必须注意交通信号。)
Police are warning the public to be on the alert for suspicious packages.(警方警告公众要警惕可疑包裹。)
Hearing this, I was instantly on the alert.(我一听这话，当下就警惕起来。)
But we must remain on the alert.(但是我们现在仍然要保持警惕。)
The armed forces were on high alert to guard against any retaliation.(武装部队保持高度警惕，以防发生任何报复行为。)
Often on the alert, she checks once but twice in the event...(她总是警惕着，一个事情上检查了一遍又一遍。)
The threshold on this chart does not trigger an alert.(此图表上的阈值不会触发提醒。)
The yellow and red line on the chart above represents the alert thresholds.(图中，黄色和红色的线条表示警戒阈值。)

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