A swarm of small earthquakes hit Southern California's Imperial Valley on Wednesday afternoon, according to the United States Geological Survey (USGS).
원문출처 : https://www.cnn.com/2020/10/01/us/earthquakes-imperial-valley-california/index.html
원문출처 : https://www.cnn.com/2020/10/01/us/earthquakes-imperial-valley-california/index.html