All the St. Louis hospitals are on red alert.
所有的圣路易斯医院都拉响了紧急警报。
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。
They want to be on the alert for similar buying opportunities.
他们要准备应对类似的购买机会。
Following the bomb blast, local hospitals have been put on red alert.
炸弹爆炸之后，当地医院一直处于戒备状态。
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。
They were constantly on the alert not to be taken by surprise.
他们一直处于常备不懈状态以防突然袭击。
The world is alert and on guard as never before.
世界从没有向现在这样保持警惕和戒备。
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。
Consumers also tend to be more alert on the Internet.
消费者当然也倾向于在互联网上更加谨慎小心。
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。
Run your page again and notice that you now have to click on an image to get the alert box to pop up.
再次运行页面并注意，现在必须要单击每个图像以弹出警告框。
The health secretary, Alan Johnson, said Britain was on "constant alert".
英国卫生大臣艾伦·约翰逊(Alan Johnson)说，英国正严阵以待。
ON APRIL 4th an alert went out around the University of Texas at Austin.
四月十一日，一场虚惊发生在位于德州州府奥斯汀市的一所大学。
But we must remain on the alert.
但是我们现在仍然要保持警惕。
On the right side, enter an alert (You are in the oncomplete event handler).
在右部分，输入提示(您处于oncomplete事件句柄中)。
Her down on the alert and walked into a world of rivers.
她放下了戒备，走进一个血流成河的世界。
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。
I'll alert mothers it's safe to let their children back on the streets.
那我可以告诉母亲们让他们的孩子回到街上玩是安全的了。
黄灯表示警告状态。
Hearing this, I was instantly on the alert.
我一听这话，当下就警惕起来。
We were constantly on the alert against any surprise attack.
我们时时刻刻都在提防突然袭击。
She is often on the alert to avoid such company.
她时常警惕着，不和这样的人为伍。
We are on high alert against the challenge that you referred to in your question.
我们对你在问题中提到的挑战保持高度警惕。
媒体正高度戒备。
A buoy in the Coral Sea is also on alert.
珊瑚海的一个浮标也报警了。
The soldiers are on the alert against the enemy's attack.
战士对敌人的攻击处于戒备状态。
The soldiers are on the alert against the enemy's attack.
战士对敌人的攻击处于戒备状态。
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