investigator

名词 investigator:

1. a scientist who devotes himself to doing research
   同义词：research worker, researcher
2. someone who investigates
3. a police officer who investigates crimes
   同义词：detective, tec, police detective

1. Investigator is searching the wreckage of the plane to try and find the cause of the tragedy.
   调查人员在飞机残骸中搜索，希望找出造成这一悲惨事件的原因。
2. The investigator will be divided into three groups.
   所有的调查员将被分为三个小组。