“发现罪犯应该立即报告警察”用英语怎么说?

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“发现罪犯应该立即报告警察”用英语怎么说?

祈使句:Call the police when witnessing crimes.【简洁】写在扫盲手册上的:Whenever you witness crime being commited,you should inform the police right away.添油加醋一点的:Whenever you witness crime be...