The hills recede into the distance and now we are in vast grasslands dotted with termite mounds, skyscraper sandcastles of the insect world.

群山渐渐隐去，我们现在是在广阔的草原上，白蚁丘星罗棋布，那是昆虫世界的摩天大楼。

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Located in tropical areas at low altitudes, savannas are stable ecosystems, some wet and some dry consisting of vast grasslands with scattered trees or shrubs.

"热带稀树草原位于热带地区，海拔较低，是一种稳定的生态系统，由广阔的草地和稀疏分布其中的树木或灌木组成，有些地区湿润，有些地区干燥。

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The vast grasslands of the High Plains in the central United States were settled by farmers and ranchers in the 1880s.

在19世纪80年代，美国中部的高地平原大草原是由农民和牧场主开垦的。

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Vast expanses of open grasslands stretch for hundreds of miles, on past the borders with Russia and Mongolia.

ECONOMIST: The good and bad of one of China��s border regions

In 1959, a vast new oil field in the grasslands of northeast China, in Manchuria, was discovered.

FORBES: Oil and China