was underlain by In the early twentieth century,however,it was discovered that much of the High Plains was underlain by a huge aquifer (a rock layer containing large quantities of groundwater).这句话怎么理解啊
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was underlain by In the early twentieth century,however,it was discovered that much of the High Plains was underlain by a huge aquifer (a rock layer containing large quantities of groundwater).这句话怎么理解啊
was underlain by
In the early twentieth century,however,it was discovered that much of the High Plains was underlain by a huge aquifer (a rock layer containing large quantities of groundwater).这句话怎么理解啊
was underlain by In the early twentieth century,however,it was discovered that much of the High Plains was underlain by a huge aquifer (a rock layer containing large quantities of groundwater).这句话怎么理解啊
20世纪早期,人们发现大部分的高平原地区之下存在巨大的含水土层(含有大量地下水的岩层)
然而,在二十世纪初期就发现很多高原的地下都有很大的含水层(岩石层中含有大量地下水)。
然而在第二十世纪,早期,人们发现许多高平原伏的巨大的蓄水层(一种含有大量地下水的岩石层)。