1. 卷入的;参与的;与…有密切关联的
If you are involved in a situation or activity, you are taking part in it or have a strong connection with it.

2. 专心于…的;忙于…的
If you are involved in something, you give a lot of time, effort, or attention to it.

3. 包含的;涉及的
The things involved in something such as a job or system are the necessary parts or consequences of it.

4. 复杂难懂的;棘手的;难处理的
If a situation or activity is involved, it has a lot of different parts or aspects, often making it difficult to understand, explain, or do.

5. 关系暧昧的;有情爱关系的
If one person is involved with another, especially someone they are not married to, they are having a sexual or romantic relationship.