地震是震动地面由突然打破和转移地球的岩石外壳的大部分造成。
An earthquake is a shaking of the ground caused by the sudden breaking_and_shifting of large sections of earth's rocky outer shell.
地震是震动地面造成的破坏和突然变化的很大一部分地球的岩石外壳。
An earthquake is a shaking of the ground caused by the sudden breaking and shifting of large sections of earth's rocky outer shell.
不同地震波震动地表的方向不同，穿越地层的速度也不同。
The different types of energy waves shake the ground in different ways and also travel through the earth at different velocities.
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