We left the rough track and bumped our way over a rugged mountainous terrain.

我们驶离坎坷的小道，又颠簸过了崎岖多岩的山地。

《柯林斯英汉双解大词典》

Here the high mountainous terrain is covered with forests.

高山上布满森林。

youdao

Here, the high mountainous terrain is covered with forests.

高山上布满森林。

youdao

Bin Laden is believed to be in hiding in Pakistan, along the remote mountainous terrain border with Afghanistan.

VOA: standard.2009.09.14

She says the work still is not easy, though,considering this is the country's worst flooding in more than 80 years and the area's mountainous terrain can make transportation difficult, even in the best of weather.

VOA: standard.2010.08.02

Mr Pathak adds that Nepal's mountainous terrain also makes it an ideal place to cultivate coffee.

BBC: Nepal farmers brew success with coffee cultivation

The militants have had years to entrench positions that are dug into mountainous terrain of goat tracks, caves and thick forest.

ECONOMIST: Pakistan and the Taliban

Officials say there simply aren't enough troops to hold Afghanistan's mountainous terrain or to deal with the growing number of fighters.

NPR: Series Overview: The Embattled Frontier