I heard four or five loud bangs.

我听到四五声巨响。

《柯林斯英汉双解大词典》

You make loud bangs at the surface and listen to the returning echoes.

您砰砰巨响在表面上，并听取返回的回声。

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"We heard two loud bangs... the sky was filled with dust like a volcanic eruption, and flood waters, mud and rocks streamed onto the roads," she said.

“我们听到两声巨响…天空一片尘土，就像是火山喷发，然后洪水、泥浆夹杂着岩石倾泻到公路上，”她说。

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Eyewitness Alan Reeves said there "were loud bangs" when the car's tyres exploded.

BBC: North Norfolk Railway signal box catches fire

There were several very loud bangs and fire coming out of the engine.

CNN: Passengers report scare on earlier US Airways Flight 1549

Suddenly, "This girl was shrieking, " followed by loud bangs just seconds later.

WSJ: Cops investigating after NY college student killed