1. 参与（某事）：She is engaged in her work. 她正在全神贯注地工作。
2. 订婚：They are engaged to be married. 他们已订婚，即将结婚。
3. 接洽；与…交涉：We are engaging an attorney to represent us. 我们正在聘请一位律师代表我们。
4. 使参与；吸引：The new project aims to engage more people in environmental protection. 新项目旨在吸引更多人在环保方面参与其中。