"调查研究"用英语怎么说?

调查扒弊研究春衫族塌宴：（n.)investigation and study
1.We investigated and studied this environmental problem.
2.Investigation and study is basic skill of government staff members.

用两个词，因为调查不意味着首并高蔽燃就会研究
1.我们对环保问题进行者尺了调查研究.
We research and stuty on the environment problem.
2.调研工作是机关干部的基本功.
Researching is the basic work government cadres.

Research
我们对环保问题进行圆者了调查橘大薯研究.(The environmental problems we conducted a survey study.)
调研工作是机关仿告干部的基本功.(Research work is cadres of the basic skills.)

We did some research work on environmental protection.
Researching work is basic for government cadres.

调查研究

investigate and research