遭到影响的区域越大，地震级别就越高。
地震级别是按照最初摇晃的强度和遭到影响的范围来标定的。
Magnitude is measured by the strength of the initial jolt and the scope affected.
地震级别是根据某一时期震动图记录的地震波振幅的对数值计算的。
The magnitude of an earthquake is determined from the logarithm of the amplitude of waves recorded on a seismogram at a certain period.
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