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

VOA: standard.2009.09.14

s very important but it's also pretty nearly impossible because the difficulty of the terrain, the people who are divided by this border do not recognize the border and the Afghanastan has never recognized it as an international border.

但其实也是几乎不可能的，It’,因为那里的地形很复杂，被这个边境线所分开的人们并不认可这个边境线,阿富汗人不认可这个边境线。

普林斯顿公开课 - 国际座谈会课程节选

Some 3,600 firefighters are attacking the flames in steep terrain, using bulldozers, tractors and hand tools.

VOA: standard.2009.09.01

Osman says other concerns include sewage,unregulated restaurants, and the use of all-terrain vehicles for recreation.

VOA: standard.2010.08.05

And for that reason, we've had to create an all-terrain version of the MRAP,".

VOA: standard.2009.11.02

And so,an acronym within an acronym was born the M-ATV,or MRAP All-Terrain Vehicle.

VOA: standard.2009.11.02

Afghanistan's hot and harsh terrain can be hard on footwear.

VOA: standard.2010.07.06

Their surfaces undulate to simulate Canada's terrain.

VOA: standard.2010.02.16

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