watchful

'wɒtʃful

六级 Collins 1

a engaged in or accustomed to close observation
s experiencing or accompanied by sleeplessness

a. 注意的, 警戒的, 警醒的, (时间)醒着换过的

Collins 星级

11,612

BNC 频率

12,369

使用频率

watchful 由 watch（观看、注意）和后缀 -ful（充满...的，具有...的）组成，表示充满警觉或注意的人。

例句

1. The teacher was watchful during the exam to prevent cheating.

老师在考试期间非常警惕，以防止作弊。

2. Parents should be watchful when their children play outside.

父母在孩子们在外面玩耍时应该保持警惕。

3. A watchful eye can help keep your belongings safe.

细心的观察可以帮助保护你的财物安全。