This is the 425th most frequent Chinese word.
初步
Preliminary.
In this context, "初步" means elementary or initial, indicating the early stage of the research.
我们已经完成了初步的研究。
We have completed the preliminary research.
Here, "初步" describes the state as being in a beginning phase or not fully developed.
他的计划尚处于初步阶段。
His plan is still at the initial stage.
In this example, "初步" conveys something that is introductory or preparatory, usually as the basis for further detailed work.