答：长时间以来一直有关于隆隆声的报导。在美国关于这种声音的报导多见于美国东北部和东部沿岸。
"Booms" have been reported for a long time, and they tend to occur more in the Northeastern US and along the east Coast.
随着低沉的隆隆声，螺旋桨开始旋转起来。
With a low-pitched rumbling noise, the propeller began to rotate.
人们交谈的声音混合在一起，震耳欲聋的隆隆声充满整个大厅。
The sounds of people's conversations mixed together into a deafening rumble, which filled the whole hall.
复印机发出的有节奏的嗡嗡声或吹风机发出的隆隆声就足以使她发火。
The mere rhythmic drone of a photocopier or the rumble from a hairdryer is enough to set her off.
切尔西在隆隆声中取得开局三连胜。尽管专家指出他们的进攻缺乏宽度，还怀疑接下来他们到底还能有多大威力。
Chelsea have rumbled to three straight league victories at the start of the season, despite pundits pointing out their lack of width, and wondering just how effective they can continue to be.
然后传来重物坍塌时的隆隆声。
在这个温和的季节，伴着拖拉机的隆隆声，农民们大概要忙活半个月。
In this mild climate, with the booming of tractors, the peasants would be busy approximately for a fortnight.
首先，公司最大限度地分享服务器以减少机器的隆隆声。
First, companies maximize servers by sharing them, so fewer machines are chugging away.
“有很大的隆隆声，我公寓的窗户发出了5到10秒的咯咯声，”他回忆到。
"There was a loud rumble and my Windows in my apartment rattled for 5 to 10 seconds," he recalled.
人们的说话声充满了整座大厅，发出震耳欲聋的隆隆声。
The sounds of people's conversations mixed together into a deafening rumble, which filled the hall.
所以，具备一种独一无二的可识别的叫声无疑是非常有用的，就像米爱卡发出的这种低沉的，卡车一样的隆隆声一样。
So having a uniquely recognizable call, like Mlaika's low truck-rumble sound, could be a very useful.
将会有隆隆声，然后无法阻挡的事件将会迫使你们地球上的人重新评估你们的信仰。
There will be rumblings and then unstoppable occurrences that will force you on Earth to reassess your beliefs.
一声低沉的隆隆声，打破了黎明前的寂静。
控制器的隆隆声已添加。
我们偶尔听见一辆驶过的卡车的隆隆声。
在战场上，一个爆炸的隆隆声在一瞬间永久破坏了一位士兵的听力，而数千的从伊拉克返回的士兵都有着永久性的听力丧失。
On the battlefield, a soldier's hearing can be permanently damaged in an instant by the boom of an explosion, and thousands of soldiers returning from Iraq have some permanent hearing loss.
旧金山要塞区麻雀的鸣叫声实际上比它们以往任何时候的叫声都要更高——这样人们才能在驶过附近金门大桥的汽车隆隆声中听到它们的鸣叫。
Sparrows living in San Francisco's Presidio district actually tweet their tunes in a higher register than they did in the past, to be heard over the rumble of cars on the nearby Golden Gate Bridge.
第二天早晨来临时，他们又出发了。他们还没有走多远，就听到了一种低沉的隆隆声，就像是好多野兽的吼声。
When morning came, they started again. Before they had gone far they heard a low rumble, as of the growling of many wild animals.
他们立刻加入沿火警紧急出口撤离的人流，在到达第15层时，他们听到南塔倒塌的隆隆声。
They joined the line of people in the fire escape and when they reached the15th floor heard the noise of the south tower collapsing .
他们被地下忽然传来的隆隆声吓了一跳。
A rumbling noise produced by the movement of gas through the intestines.
一座曾一度休眠的火山不时传来不祥的轰隆隆声这可是个不好的预兆。
The ominous rumblings from a once-dormant volcano were a bad omen.
尽管“观叶列车”的概念从旅游铁路更新一个个作业区之前已经很火，这些列车保留它们受欢迎的程度，是因为最多的隆隆声通过的是未开发的土地。
Although the notion of "foliage trains" has been around since tourist railroads replaced working ones, these trains keep their popularity because most roll through undeveloped land.
我们偶尔听到卡车驶过的隆隆声。
火车路过时的隆隆声把他弄醒了。
撕裂会制造出裂缝，大桥坍塌，道路起伏，家园和房屋倒塌，天然气和自来水管道爆炸，而且经常会有很多令人恐惧的隆隆声噪音。
Tearing open creates crevasses, dropping Bridges, heaving roadways, collapsing homes and buildings, exploding gas and water mains, and often lots of terrifying rumbling noises.
撕裂会制造出裂缝，大桥坍塌，道路起伏，家园和房屋倒塌，天然气和自来水管道爆炸，而且经常会有很多令人恐惧的隆隆声噪音。
Tearing open creates crevasses, dropping Bridges, heaving roadways, collapsing homes and buildings, exploding gas and water mains, and often lots of terrifying rumbling noises.
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