New words：

involve [in'vɔlv] v.需要；包含；牵涉；影响；加入

Sample Sentences：

Many of the crimes involved drugs.
I'm still not clear what the job involves.
How many vehicles were involved in the crash?
Parents should involve themselves in their child's education.

vehicle [ˈviːəkl] n. 车辆；交通工具

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