paying attention to what is happening in case of danger, accidents, etc. 注意的;警惕的;提防的 Her expression was watchful and alert. 她露出一副察言观色、处处提防的表情。 His mother kept a watchful eye on him. 他的母亲特别留心他。 The children played under the watchful eye of their teacher. 孩子们在老师的看护下玩耍。 She seemed watchful and slightly worried. 她似乎很警惕,有点担心。
Oxford Collocations DictionaryWatchful is used with these nouns:- eye
- gaze