watchful
英 ['wɒtʃfʊl; -f(ə)l]
美['wɑtʃfl]
- adj. 注意的；警惕的；警醒的
考试真题
- An assumption behind UK insurance for driverless cars, introduced earlier this year, insists that a human "be watchful and monitoring the road" at every moment.
2017年高考英语天津卷 阅读理解 阅读C 原文