英语翻译.An earthquake is a shaking of the ground caused by the

英语翻译
.An earthquake is a shaking of the ground caused by the sudden breaking and shifting of large sections of Earth's rocky outer shell.Earthquakes are among the most powerful events on earth,and their results can be terrifying.A severe earthquake may release energy 10,000 times as great as that of the first atomic bomb.Rock movements during an earthquake can make rivers change their course.Earthquakes can trigger landslides that cause great damage and loss of life.Large earthquakes beneath the ocean can create a series of huge,destructive waves called tsunamis (pronounced tsoo NAH meez) that flood coasts for many miles.
Earthquakes almost never kill people directly.Instead,many deaths and injuries in earthquakes result from falling objects and the collapse of buildings,bridges,and other structures.Fire resulting from broken gas or power lines is another major danger during a quake.Spills of hazardous chemicals are also a concern during an earthquake.
The force of an earthquake depends on how much rock breaks and how far it shifts.Powerful earthquakes can shake firm ground violently for great distances.During minor earthquakes,the vibration may be no greater than the vibration caused by a passing truck.
On average,a powerful earthquake occurs less than once every two years.At least 40 moderate earthquakes cause damage somewhere in the world each year.About 40,000 to 50,000 small earthquakes--large enough to be felt but not damaging--occur annually.

地震引起的地面振动被这突如其来的断裂和阴暗的大部份的岩石地球外壳.地震是地球上最强大的事件,其结果可太可怕了.一场剧烈的地震释放能量的1万倍的第一颗原子弹.岩石运动在地震中可使河流改变他们的课程.地震可能引起山体滑坡造成巨大的伤害及生命的损失.在大地震,可以创建一系列巨大的、破坏性的波叫做海啸洪水海岸好几英里.
地震几乎从不杀人.相反,许多人死亡和受伤的地震造成崩溃的落体、建筑、桥梁、和其他的建筑.火灾造成断燃气或电源线路中是另一个主要危险的地震.溢出的危险化学品也担心地震期间.
地震的力量的多少取决于岩石断裂和转移.强烈的地震能够动摇坚实的陆地上暴力很远的地方.在小震、震动也许不大于振动引起的卡车.
平均来说,一个强大的地震发生少于每两年举办一次.至少有40个中等地震造成损害的,每年在世界某个地方.大约4万至5万小型地震——足够大的感觉而不是破坏——每年发生.