"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。
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.
但200万年前，随着环境变得更加干燥，他们开始在更开阔的草地上寻找食物——这对大脑是一大考验。众所周知，大脑对热很敏感。
But as the environment became drier around two million years ago, they began to forage in more-open grasslands-a problem for brains, which are notoriously vulnerable to heat.
环境大臣伊恩·皮尔森(Ian Pearson)表示，英国人必须准备同他们的草坪说再见了，因为全球变暖正将翠绿的草地变成干燥的尘球。
Ian Pearson, an environment minister, said Britons must prepare to bid farewell to their lawns, as global warming is turning verdant swards into dried-up dust-bowls.
苜蓿具有强烈的耗水性能，导致半湿润区苜蓿草地发生干燥化，草地退化较为严重。
Due to its strong consumption of soil water, soil desiccation and grassland degradation happened quite frequently at this zone.
在商议了潦草地写在笔记本上的通行证后，我们继续了我们的旅程，穿越栅栏，爬上形成于崩塌的泥石上，带有干燥泥土和岩石的斜坡。
After negotiating a permit, which was scribbled on a note book, we continue our journey - through the barrier and up a narrow steep track of dried earth and rock formed on a landslide.
在商议了潦草地写在笔记本上的通行证后，我们继续了我们的旅程，穿越栅栏，爬上形成于崩塌的泥石上，带有干燥泥土和岩石的斜坡。
After negotiating a permit, which was scribbled on a note book, we continue our journey - through the barrier and up a narrow steep track of dried earth and rock formed on a landslide.
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