adj.知道的，有意识的
Merriam-Webster Online Dictionary
cognizant (adjective) knowledgeable of something especially through personal experience , also - mindful aware
Merriam-Webster Online Thesaurus
cognizant (adjective)having specified facts or feelings actively impressed on the mind
SYNONYMS:
alive, apprehensive, aware, cognizant, mindful, sensible, sentient, ware, wittingRELATED WORDS:
alert, attentive, careful, cautious, heedful, observant, open-eyed, regardful, safe, vigilant, wary, watchful, wide-awake; hyperaware, hyperconsciousNEAR ANTONYMS:
careless, heedless, inattentive, incautious, mindless, unguarded, unheeding, unwary