in a way that involves a lot of effort or activity in a short period of time or small area

She is studying intensively, working toward her degree. 她正在紧张地学习，为获得学位而努力。

Despite much intensively farmed land, this is one of the wildest regions of lowland England. 尽管经过密集的农业耕作，这里还是英格兰低地最荒凉的地区之一。