An earthquake occurs when two blocks of the Earth slip past each other.

当两块土地相互滑动时，就会发生地震。

CHAD MYERS, AMS METEOROLOGIST: Number one, an earthquake occurs when two blocks of the Earth slip fast each other.

查德·迈尔斯 美国数学学会气象学家：第一，地震是由地球板块相互挤压造成的。

Number one, an earthquake occurs when two blocks of the Earth slip fast each other.

第一，当地球的两个板块相互快速滑动时，就会发生地震。