主要活动地区是太平洋西北边缘地震带和大洋岛弧地震带。
The main regions of seismic activities were the seismic belt of the northwest margin of the Pacific Ocean and the Oceanic island-arc seismic belt.
主要活动地区是太平洋西北边缘地震带和大洋岛弧地震带。
The main regions of seismic activities were the seismic belt of the northwest margin of the Pacific Ocean and the Oceanic island-arc seismic belt.
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