Each individual wave crest can last 5 to 15 minutes and flood coastal areas.

每个波峰可以持续5到15分钟从而是洪水淹没整个沿海地区。

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The crest of a flood is its highest point, or peak. Flash floods are dangerous because people downstream have no warning of the coming flood.

洪峰是洪水的最高点或顶峰。骤发洪水很危险，因为下游的人们没有得到洪水将至的警告。

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The National Weather Service had predicted that the river would crest to about 19 feet above flood stage.

国家气象台曾预报红河将上涨到洪水位以上19英尺。

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Volunteers in the tiny community have worked endlessly since Wednesday to build a makeshift sandbag levee that seemed to be holding as the crest expected to be 11 feet above flood stage approached.

NPR: Crests Approaching In Several Towns In Midwest