Hang Son Doong covers a fast flowing river and the British expedition team exclaimed in surprise when they crossed it by rope.

韩松洞底横越了一条湍急的河流，想渡河还须使用绳索，让英国探险队员们连连惊叹。

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The layout of the anti erosion ability is very strong, and has very high flood intensity, applicable to larger amount of water and the fast flowing river, and its cost is low.

这种布局抗冲刷才能十分强，并且具有很高的抗洪强度，适用于水量较大且流速较快的河道，并且造价低价。

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The current of the river is fast flowing and treacherous.

河水的水流湍急而且变化莫测。

《柯林斯英汉双解大词典》

"Neither Mr Fuller nor any other member of staff knew that the group was intending to cross a fast flowing river, nor could they reasonably have foreseen that they would attempt to do so, " he said.

BBC: Charlotte Shaw

And judges picked Mr Hollins from the nominations for rescuing a drowning man and his dog from a fast-flowing river.

BBC: NEWS | UK | Wales | 'First class' awards for posties

He said the old bridge was affected by tides, a fast-flowing river, and foundations that had "taken a pounding" over the years.

BBC: Shoreham swing bridge nearing completion