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。)