Earthquakes and volcanic activity are closely associated, but the authorities said the eruption at Mount Aso, the biggest active volcano in Japan, was minor and did not pose an immediate threat.
地震和火山活动往往存在密切关联，但日本当局表示，作为日本最大的活火山，阿苏山这次的爆发规模比较小，没有构成直接的威胁。
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