The powerful 8.1 magnitude earthquake that struck off the west coast of Mexico in the early hours of Friday morning is located in the Pacific Ring of Fire, an area of intense seismic activity.
원문출처 : http://www.cnn.com/2017/09/08/world/ring-of-fire-explainer/index.html
원문출처 : http://www.cnn.com/2017/09/08/world/ring-of-fire-explainer/index.html