4. be involved in... 涉足……；卷入……
◆ 疯狂操练
She has been involved in politics for years.
（她涉足政治已经多年了。）

◆ 疯狂实战
A: The company is currently involved in a lawsuit.
B: I read about it in the newspaper.
A: 公司现在正卷入一场官司。
B: 我在报上看到了。