| 例句 |
red alertnoun the state of being constantly attentive and responsive to signs of opportunity, activity, or dangerthe paparazzi were on red alert for sightings of the hot new Hollywood couple alert, alertness, attentiveness, qui vive, vigilance, watch, watchfulness aliveness, awareness, consciousness, mindfulness, receptiveness, receptivity, sensitivitycare, carefulness, cautiousness, chariness, heedfulness, warinesspreparation, readiness absentmindedness, abstraction, daydreaming, daze, distractionabsorption, engrossment, obliviousness, preoccupationunawareness, unconsciousnesscarelessness, heedlessness, inattention, inattentiveness, inobservanceunwariness in 1941 |