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2026英语单词在线查_免费看外语词汇翻译-单词机watchfulwatchful考试真题

watchful

英 ['wɒtʃfʊl; -f(ə)l] 美['wɑtʃfl]

英语单词watchful

英英释义考试真题实用场景例句

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.