同义词： sweep
同义词： area surface area
以上来源于: WordNet
N-COUNT An expanse of something, usually sea, sky, or land, is a very large amount of it. 一大片 (海洋、天空、土地等)
...a vast expanse of grassland.
…一大片草地。
The rabbits destroyed huge expanses of Australia and threatened the sheep and cattle industries.
这些兔子摧毁了澳大利亚的大片土地，并威胁到与羊和牛相关的产业。
Wind farms, which generate electricity using arrays of thousands of wind-powered turbines, require vast expanses of open land.
风力发电场使用数千个风力涡轮机阵列发电，这需要大片开阔的土地。
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