
好词典

源自法语 alerte(警觉的),最终来自意大利语 all'erta(字面意思为'在瞭望台上'),由alla(在)和erta(高地、瞭望台)组成。
❶ 指保持警觉或清醒的状态,能够快速注意到周围的变化或潜在危险的能力。常用于描述人或动物的精神状态。
“The guard maintained a high level of alertness throughout the night.”
(警卫整晚都保持着高度警觉。)
“Drinking coffee can improve your alertness in the morning.”
(喝咖啡可以提高你早晨的清醒度。)
heightened alertness — 指比平常更加警觉的状态,通常用于需要特别注意或危险情况下的描述。
“The soldiers were in a state of heightened alertness during the mission.”
(士兵们在执行任务期间处于高度警觉状态。)