相关单词近義詞 vigilant 警戒的, watchful 注意的, alert 警覺的, on the ball 有準備bright-eyed and bushy-tailed, 警覺地準備做某事..., perky 活潑的, unsleeping 未入睡的, heads-up 足智多謀的臨近詞wide, wide jaw 返回 wide-awake