involved

Several high-ranking officials were involved in the corruption scandal.

(Chinese) 几名高级官员卷入了这起腐败丑闻。

He has been involved in local politics for over twenty years.

(Chinese) 他参与地方政治已经超过二十年了。

The plot of the novel was so involved that I had to read it twice.

(Chinese) 这部小说的情节如此复杂，以至于我不得不读了两遍。

Fixing the engine proved to be a more involved task than we expected.

(Chinese) 修理引擎被证明是一项比我们预想的更复杂的任务。