investigator

The insurance investigator examined the damaged car to see if the accident was real.

(Chinese) 保险调查员检查了受损的车辆，以核实事故是否真实发生。

A private investigator was hired to find the missing witness before the trial started.

(Chinese) 在审判开始前，一名私家侦探被雇佣去寻找那名失踪的证人。