您要查找的是不是：
- 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。
- An unwanted false electronic pulse. 一种不希望有的假电子脉冲。
- Be sure to be watchful or alert. 必须留神，千万要提防。
- They have put the army on the alert. 他们已使军队进入戒备状态。
- The alert leopard went up to a deer quietly. 警觉的豹子静悄悄地走近一只鹿。
- An alert listener will have noticed the error. 耳朵尖的人能听出这个错。
- He knew the pulse of the nation. 他了解国民的心态。
- The doctor took my temperature and my pulse. 医生量了量我的体温和脉搏。
- The excitement quickened my pulse. 激动使我的心跳加快。
- The machine is operated by an electronic pulse. 这台机器由电子脉冲信号操纵。
- He knew the pulse of the people. 他了解人民的意向。
- 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。
- Alert to circumstances; attentive. 对周围环境敏感的; 留心的
- Troops are on the alert against any possible aggression. 军队戒备着可能的来犯。
- The boy was alert in answering the stranger's questions. 男孩很机敏地回答了陌生人的问题。
- Pul is a short form for pulmonary. 应该是肺部气体栓塞吧!
- Although he's over eighty his mind is still remarkably alert. 他虽已年过八十，但头脑仍然十分机敏。
- Anomalous Pul mo nary Venous Drainage=? +肺静脉畸形引流=？
