After extensive research, we believe that the CMC should adjust and clear in the course of building some guidance.

经过大量的调查研究以后，我们认为要调整和明确管委会在组建过程中的一些指导性意见。

We acquired the Apollo … after over a year of extensive research.

我们在买下这尊阿波罗雕像前，花了整整一年仔细研究。