单词：seismic center
seismic center的用法和样例：
例句
- Seismologist Stuart Sipkin with the US National Earthquake Center says he's not surprised by the string of quakes in these regions.美国国家地震中心地震学家西金说他并不对该区域连串的地震感到惊讶。
- Seismic waves move out from the focus of an earthquake in all directions.地震波从震中向周围的各个方向传播。
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