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\\\"
造句
用作形容詞(adj.)
We must keep an vigilant eye upon imperialism. 我們必須對帝國主義保持警戒。
A pilot must be vigilant at all times. 飛行員必須隨時保持警惕。
The night shift has to be doubly vigilant. 值夜班要加倍警惕。
The British Prime Minister Gordon Brown has urged people to be vigilant against the potential terrorist attack. 英國首相戈登.
常用短語
He had been a vigilant and faithful watchdog of the state\\\'s interest.