
好词典

源自中古英语 'waccheful',由 'watch'(观察)和 '-ful'(充满…的)组成,最早记录于14世纪。
❶ 形容人保持警觉或密切关注的状态,通常是为了防止危险或发现机会。
“The watchful guard noticed the suspicious movement.”
(警觉的警卫注意到了可疑的动静。)
“She kept a watchful eye on her toddler near the pool.”
(她在泳池边密切照看着学步的孩子。)
keep a watchful eye — 持续密切观察某人或某事,通常带有保护或监督的意图。
“Teachers keep a watchful eye on students during the exam.”
(考试期间老师们会密切监督学生。)