alert造句
271. Oh, and all border points are on full alert - guards doubled, searchlights on the border working overtime.
272. Behind his fabulous trumpet playing and cheeky alleged humour there's an intelligent, alert, artful mind at work.
273. Sirens sounded an end to the red alert.
274. Commerce is unexpectedly confident and serene, alert, adventurous, and unwearied.
275. The radio alert ed the citizens to prepare for the hurricane.
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