对……进行调查的英文

• investigate into

• 对:    answer; reply
• 进行调查:    make an investigation
• 进行调查:    conduct a survey; institute an investigation; to carry out an investigation; to conduct a flight; to conduct an investigation
• 直接进行调查:    investigate at first hand
• 对某一事进行调查:    inquire into a matter