alert

alert

名词 alert:

condition of heightened watchfulness or preparation for action

同义词：qui vive

a warning serves to make you more alert to danger

同义词：alerting

an automatic signal (usually a sound) warning of danger

同义词：alarm, warning signal, alarum

动词 alert:

warn or arouse to a sense of danger or call to a state of preparedness

同义词：alarm

形容词 alert:

very attentive or observant

mentally responsive

not unconscious; especially having become conscious

同义词：awake

(usually followed by `to') showing acute awareness; mentally perceptive

同义词：alive, awake