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，有些担心。
Oxford Collocations DictionaryWatchful is used with these nouns:- eye
- gaze