In the past eight weeks, more than 130 small earthquakes have trembled beneath the surface of Mount St. Helens.
원문출처 : http://rss.cnn.com/r/60d8b2c855/0Ledition0Bcnn0Bcom0C20A160C0A50C0A70Cus0Cmount0Est0Ehelens0Emini0Eearthquakes0Cindex0Bhtml0Deref0Fedition
원문출처 : http://rss.cnn.com/r/60d8b2c855/0Ledition0Bcnn0Bcom0C20A160C0A50C0A70Cus0Cmount0Est0Ehelens0Emini0Eearthquakes0Cindex0Bhtml0Deref0Fedition