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One should not run about aimlessly during an alert. 空袭警报期间不可到处乱跑。
She is always on the alert for some new calamity. 她总是保持警觉以防某种新的灾难。
Keep on the alert; we're due for an inspection. 提防着点，轮到检查我们了。
Be sure to be watchful or alert. 必须留神，千万要提防。
She cast her eyes down to avoid direct eye contact. 她垂下双目以避免对视。
He pushed hard on the brake pedal to avoid a collision. 他使劲踩下煞车踏板以避免撞车。
They have put the army on the alert. 他们已使军队进入戒备状态。
He brake his car just in time to avoid an accident. 他及时煞车，避免了一次事故。
The alert leopard went up to a deer quietly. 警觉的豹子静悄悄地走近一只鹿。
We should use anthracite to avoid air pollution. 我们应该使用无烟煤以防止空气污染。
An alert listener will have noticed the error. 耳朵尖的人能听出这个错。
I often tried to avoid ill_mannered bus conductors. 我常常想法避开那些态度不好的公共汽车售票员。
She cast about how she could avoid work. 她盘算着怎样才能逃避工作。
He snot a pistol of me. I jumped back in time to avoid being shot. 他用手枪向我射击，我及时向后一跳没被射中。
The district was put on red alert during a terrorist bomb scare. 这个地区在得到恐怖主义者轰炸后作了应急准备。
Avoid crossing this street at rush hours. 避免在交通拥挤时间穿越这条街道。
Avoid sensationalism in reporting crime. 报道罪案时要避免使用耸动视听的手段。
Alert to circumstances; attentive. 对周围环境敏感的; 留心的
We must avoid wasteful duplication of effort. 我们必须避免无谓的重复劳动。
Troops are on the alert against any possible aggression. 军队戒备着可能的来犯。