SORU: boş bırakılan yere parçanın anlam bütünlüğünü sağlamak için getirilebilecek cümleyi bulunuz
Over the years scientists have hunted for some signal that would allow forecasters to pinpoint exactly where and when an earthquake will hit. After decades spent searching in vain, many seismologists now doubt whether such a signal even exists. ---- Within seconds of an earthquake’s first subtle motions, scientists can now predict with some certainty how strong and widespread the shaking will be.