joint investigation的用法和样例：
例句
- The two committees are conducting a joint investigation into the big increase in juvenile crime in town in the last few years.
两个委员会对最近几年来镇上青少年犯罪率急剧上升进行了联合调查。 - The combined investigative skills of the law enforcement partners under the St. Cloud IRS Criminal Investigation and Secret Service Task Force proved to be a brick wall for E-Gold.
联合调查技能执法的伙伴在圣云国税刑事侦查和特工任务力证明了砖墙电子黄金。
