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1. Oxford American Dictionary

   alertness

   • IPA[əˈlərtnəs]

   美式

   • n.
     the quality of being alert

   • noun: alertness

2. • 釋義

   n.

   名詞

   • 1. the quality of being alert a lack of mental alertness nothing could escape the steel trap of my alertness 同義詞 vigilance, hypervigilance, awareness, watchfulness, attentiveness, ... 更多attention, circumspection, wariness, chariness, heedfulness, canniness, discretion, prudence, quick-wittedness, quick thinking, quickness of mind, sharpness, quickness, keenness, perceptiveness, responsiveness, agility, acuteness, acuity, shrewdness, astuteness, intelligence, insight, presence of mind反義詞 inattentiveness, slowness