alert

• The new orleans police would by now be alerted .
  新奥尔良的警察现在可能已处于待命状态。
• Faber became very alert .
  费伯一下子警觉起来。
• She is alert and thoughtful
  她很有心眼儿。
• My horse was not above medium size, but he was alert .
  我所骑的马，大小不过中等，但是感觉灵敏。
• The troops were alerted .
  部队在待命中。
• Do n't alert the enemy .
  不要惊动敌人。
• Knowing that danger threatened, the sentry was on the alert .
  因为知道危险势将发生，这哨兵加意戒备。
• 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 armies were constantly on the alert not to be taken by surprise .
  部队一直处于警戒状态以防突然袭击。
• Such diffidence calmed rather than alerted us .
  这种优柔寡断的调子没有使我们警觉起来，反倒使我们安心了。