Yesterday afternoon, when I was sitting in the classroom and listening to the teacher. Suddenly, the screen seemed moving and it started to shake. ...

Earthquake is one of the most severe natural disasters. It’s shaking of the ground caused by the sudden breaking and shifting of large secti...

地震是地球表层或表层下的振动所造成的地面震动，可由自然现象如地壳运动、火山活动及陨石撞击引起。 地震产生的原因是因为地壳在板块运动的过程中累积应力，...