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Migration of the seismic activity is found before a big event.
发现了大震前地震活动性的迁移。
youdao
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This has been a major event in Chines history of seismic science.
中国地震科学史上的一件大事。
youdao
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This has been a major event in Chines history of seismic science.
中国地震科学史上的一件大事。
youdao