alertness

英 [əˈlɜːtnəs]

美 [əˈlɜːrtnəs]

n.  警觉，清醒，机警

BNC.19835 / COCA.18261

柯林斯词典

• ADJ-GRADED 警觉的；警惕的；留神的；机敏的
  If you arealert, you are paying full attention to things around you and are able to deal with anything that might happen.
  1. We all have to stay alert...
     我们大家都必须保持警惕。
  2. He had been spotted by an alert neighbour.
     一个警觉的邻居发现了他。
• ADJ-GRADED 充分意识到…的;完全感觉到…的
  If you arealert tosomething, you are fully aware of it.
  1. The bank is alert to the danger.
     银行充分意识到了危险。
• N-COUNT 警戒（状态）；戒备（状态）
  Analertis a situation in which people prepare themselves for something dangerous that might happen soon.
  1. Due to a security alert, this train will not be stopping at Oxford Circus.
     由于安全戒备的原因，该次列车在“牛津街口广场”站将不停留。
• VERB 向…报警；使警觉；使警惕；使注意
  If youalertsomeonetoa situation, especially a dangerous or unpleasant situation, you tell them about it.
  1. He wanted to alert people to the activities of the group...
     他想提醒人们小心该团体的活动。
  2. I was hoping he'd alert the police.
     我当时希望他会报警。
• See also:red alert
• PHRASE 处于警戒状态;保持戒备
  If soldiers or police areon alert, they are ready to deal with anything that may happen.
  1. Soldiers and police have been put on alert.
     士兵和警方都已进入警戒状态。
• PHRASE 准备就绪；防备着
  If you areon the alert forsomething, you are ready to deal with it if it happens.
  1. They want to be on the alert for similar buying opportunities.
     他们希望随时掌握有关类似购买机会的信息。

英英释义

noun

• lively attentiveness
  Synonym:sharp-sightednesson the qui vive
• the process of paying close and continuous attention
  1. wakefulness, watchfulness, and bellicosity make a good hunter
  2. vigilance is especially susceptible to fatigue
  Synonym:watchfulnesswakefulnessvigilance
• a state of readiness to respond
  1. alerting was indicated by the desynchronization of the EEG
  Synonym:alerting

双语例句

• Our body clock, or natural body rhythm, influences our energy and alertness.
  我们的生物钟，或者说是生理节奏，会影响我们的精力和灵敏度。
• You will feel rested and you'll notice your mood and alertness improve.
  你将感到放松并会注意到你的心情和机敏度提高。
• Research suggests that taking a walk can increase productivity by improving blood circulation and alertness.
  研究表明，散步能通过提升血液循环和警戒度来提高效率。
• When you are exposed to 1,000 lux, you are getting enough light for full alertness.
  当你处于1000勒克斯单位强度的光线环境下，你才能保持完全清醒的状态所需的充足光线。
• The Arabian also developed the high spirit and alertness needed in a horse used for raiding and war.
  阿拉伯，还研制出了高昂的斗志和用于袭击和马需要的警觉性战争。
• He drinks a lot of tea to maintain his mental alertness.
  他喝很多茶保持神智清楚。
• His thin, hawk-like nose gave his whole expression an air of alertness and decision.
  他那细长的鹰钩鼻给他平添了一种机警果断的表情。
• Showing mental alertness and calculation and resourcefulness.
  表现出思想上的机敏、深思熟虑和足智多谋。
• Alertness, calmness, courage: he could see them all in the youngster's face.
  机警，镇定，胆量，都摆出在这年青人的脸上。
• Because naps help purging negative emotions, increase alertness, and enhance your abilities to learn.
  因为午休有助于消除负面情绪，提高灵敏性，并增强学习能力。