wakeful adj. 不能入睡的, 覺醒的 英英解釋:形容詞wakeful:1. carefully observant or attentive; on the lookout for possible danger同義詞:argus-eyed, open-eyed, vigilant, watchful2. (of sleep) easily Disturbed同義詞:light3. marked by full consciousness or alertness同義詞:waking