noun🔗Share警觉性，机敏。 The quality of being alert or on the alert"The security guard's alertness prevented a potential break-in at the store. "保安的警觉性 предотвратила 一起 可能 发生的 商店 入室 盗窃 案。mindbodyphysiologyqualityabilityChat with AIVocabulary GamePractice Reading
