There are 4 seismic active periods in Yunnan, but only 3 in Andaman Arc and Myanmar, lacking of the third active period.
云南有4个地震活跃期，但安达曼弧与缅甸平原却只有3个，缺失第3活跃期。
The interval of the last large seism is even shorter than the prediction by this acceleration regularity in a seismic active period.
在一个活跃期中，最后一个大震的时间间隔比这个规律规定的时间间隔更短。
Seismologists are now suggesting the Earth has entered an active seismic period.
有地震学家表明，地球已经进入了“地震活跃期”。
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