adj. 复杂的；与……关系密切的；专心于……的，忙于……的；卷入的，参与的
v. 牵涉，包含（involve 的过去式和过去分词形式）
词根：involve
adj.
involute [生物] 内卷的；纷乱的；错综复杂的
n.
involvement 牵连；包含；混乱；财政困难
involute [数] 渐伸线
vi.
involute 恢复原状；消失
vt.
involve 包含；牵涉；使陷于；潜心于
1.How many vehicles were involved in the crash?
这次撞车事故涉及多少辆汽车？
2.Her daily life involved meeting lots of people.
她在日常生活中要接触很多人。
3.We are not romantically involved.
我们没有性爱关系。
4.He's remarkably sanguine about the problems involved.
他对所涉及的问题非常自信。
5.It was stupid of you to get involved.
你卷进去了，真是愚蠢。
6.Everyone involved was sworn to secrecy.
所有相关人员均宣誓保密。
7.I was itching to get involved.
我渴望参与。