investigate
系统追查真相,收集证据,多用于犯罪/科学/新闻
examine
仔细查看或检查某物,多用于医学诊断或文本分析
Authorities are investigating whether the fire was started deliberately.
当局正在调查火灾是否系人为纵火。
The doctor examined the patient's X-rays and found no signs of fracture.
医生检查了病人的X光片,没有发现骨折迹象。