The heavy rain was the cause of the flood.

大雨是导致洪水产生的原因。

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Rescue work and an investigation into the cause of the flood are underway.

目前，救援工作和事故原因调查正在进行中。

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Chewing on a piece or two of gum, it seems, helps force fluids back into the stomach and flood the esophagus with alkaline saliva, neutralizing acids that cause the characteristic burning sensations.

嚼一两片口香糖可能会使胃液回流入胃并使口腔分泌碱性唾液冲刷食道，中和胃酸，缓解由胃酸引起的“烧灼感”。

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They cite the example of the Philippines, where policymakers are wringing their hands about a possible gradual climate-change-mediated rise in sea level from 1 to 3 millimeters per year while ignoring the primary cause of enhanced flood risk.

FORBES: Beyond Copenhagen

"This could cause a flood that could generate a mudflow down the flanks of the volcano, into the North Fork Toutle River, " Dr Major added.

BBC: NEWS | Americas | Concern over rumbling US volcano

Most of the collapses that have taken place over the last 10 years in a study done recently by engineers, about 85 percent of them were from some external cause like a flood that undercuts the pilings or a barge or a ship hitting them.

NPR: Collapsed Minneapolis Bridge Was Under Repair