During the Late Carboniferous, sedimentary rocks—rocks eroded by wind and water and deposited as fine sediments—carpeted much of the region, which might have been partially flooded from time to time.

晚石炭纪，沉积岩（整块岩石经风、水的外力侵蚀，然后均匀沉淀而形成）广泛分布于那些有可能反复被洪水侵袭的地区；

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Flood risk map reflect the different frequency flood and the scope and extent of a region likely to be flooded.

洪水风险图是反映不同频率的洪水发生时，某一区域可能遭受洪水淹没的范围和程度的地图。

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We had a lot of rain that autumn. This region was flooded.

那年秋天雨多洪大，这一带都淹了。

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In a region flooded with munitions since the days of the Afghan war against the Soviet Union, almost every home has an AK47 or something similar.

CNN: REALITY CHECK

And look at the damage so far, two million acres of farmland flooded in the delta region.

MSN: Flood frontline gets some good news about crest

Costa Rica, the region's richest economy, worries about being flooded with goods from poor neighbours.

ECONOMIST: Central America opens for business