wakeful
英 ['weɪkfʊl; -f(ə)l]
美['wekfl]
	    - adj. 醒着的;失眠的;警觉的
 
英英释意
- 1. carefully observant or attentive; on the lookout for possible danger;
 - "a policy of open-eyed awareness"
 - "the vigilant eye of the town watch"
 - "there was a watchful dignity in the room"
 - "a watchful parent with a toddler in tow"
 
- 2. (of sleep) easily disturbed;
 - "in a light doze"
 - "a light sleeper"
 - "a restless wakeful night"