watch·ful /ˈwɒtʃfəl $ ˈwɑːtʃ-, ˈwɒːtʃ-/ adjectiveadj 1 CAREFULvery careful to notice what is happening, and to make sure that everything is all right 留心的;警惕的,提防的 The entrances are guarded by watchful security staff. 入口处由警惕的保安人员把守。
His eyes were watchful. 他目光警惕。
Keep a watchful eye on elderly residents. 请留心老年居民。
2 under somebody’s watchful eye following someone’s instructions or with someone’s help 在某人的指导[帮助]下 Learn the basics under the watchful eye of a qualified instructor. 要在合格教练的指导下学习基本要领。
—watchfully adverbadv
—watchfulness noun [uncountableU]