地理漫步·世界地理英语30篇（9）
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Grasslands Stretch Across Continents
草原：横跨大陆的广阔地带
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Grasslands cover about a quarter of Earth’s land surface.草原覆盖了地球约四分之一的陆地表面。
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They get enough rain for grass but not enough for forests.这些地区降雨量足以支持草类生长，但不足以支撑森林发育。
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Prairies, savannas, and steppes are different grassland types.大草原、稀树草原和干草原是不同类型的草原。
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Herds of bison, antelope, and kangaroos roam these open spaces.野牛、羚羊和袋鼠成群结队地在这些开阔地带游荡。
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Grass roots hold soil tightly and prevent erosion.草根牢牢固定土壤，防止水土流失。
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Farmers often plow grasslands for wheat and corn fields.农民常将草原翻耕为小麦和玉米田。
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Wildfires and grazing help keep grasslands healthy and diverse.野火和放牧有助于维持草原的健康与生物多样性。
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They link climate, soil, and large animal movement patterns.草原连接着气候、土壤和大型动物的迁徙模式。