We hear a loud noise from the sky. It is thunder.

我们听到天空中很大的噪音。正在打雷。

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And in some cases, the participants knew that they might hear a loud, jarring noise at the end of the trial.

在某些情况下，参与者知道可能会在试验结束时听到响亮刺耳的噪音。

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When you hear the fire alarm, which is a very loud, continuous ringing noise, you should go to the nearest fire exit or fire escape as quickly as possible.

当你听到非常大的火警的声音、连续的振铃的时候，尽快地跑到最近的安全出口或者安全梯。

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"I think we have got to pay a wonderful tribute to a man to whom we owe all of this, he is in Johannesburg and if we make a loud enough noise he will hear us and so we say, halala Nelson Mandela."

VOA: standard.2010.06.11

There's never more than a 15-minute break before you hear the loud jet noise overhead with airplanes going to Iraq.

CNN: Gary Tuchman: No letup in coalition air campaign

Or there's the stand-alone alarm, which emits a loud sound when tripped--hopefully a neighbor will hear the noise and call the police.

CNN: ASIANOW - TIME Money | Keeping It Safe | 11/99

Sometimes, when the noise became so loud that they could not hear their own ears, Frankie would turn it down a little.

NPR: Excerpt: 'The Member of the Wedding'