watchful

adj.

注意的，留心的；小心提防的，警戒的；不眠的；惕

1. You must be watchful of your health.
   你必须注意你的健康。
2. They were not very watchful of the traffic lights.
   他们并不很注意红绿灯。
3. We should be watchful of computer viruses.
   我们应该警惕计算机病毒。
4. The guard should be watchful during the night.
   警卫在黑夜里也应该警醒。

Watchful vigilance: nursing care, technology, and the development of intensive care units.
Keeping a watchful eye [electronic resource] : the politics of congressional oversight /
PSA doubling time of prostate carcinoma managed with watchful observation alone.
Alarm calls as costly signals of antipredator vigilance: The watchful babbler game.
Watchful waiting or watchful progression?: Prostate specific antigen doubling times and clinical behavior in patients with early unt...
Delayed therapy with curative intent in a contemporary prostate cancer watchful-waiting cohort
Under the watchful eye of 'a benevolent dictator' - general practitioner and patient experiences of hepatitis C treatment initiation...
Radical prostatectomy trumps watchful waiting in early prostate cancer. Commentary on: Radical prostatectomy or watchful waiting in ...
Holding the Line with a Watchful Eye: The Impact of Perceived Parental Permissiveness and Parental Monitoring on Risky Sexual Behavi...
Choo R, DeBoer G, Klotz L, et al. PSA doubling time of prostate carcinoma managed with watchful observation alone