Parts of the forest are still dense and inaccessible.

森林的一些部分仍然很茂密，人迹罕至。

...25 million hectares of forest.

2,500 万公顷的森林

They descended from the plane into a forest of microphones and cameras. [+ of]

他们从飞机上走下来，迎接他们的是数不清的麦克风和照相机。