科学家最近发现有力的证据说明,在过去几千年里,特大地震(震级8～9级)重复发生在美国的太平洋海岸西北部,最近的一次发生在300年前。这个发现已经促使人们加固现有的建筑并修改这个地区的建筑规范。这些措施在未来地震中将挽救生命,减少损失。 Scientists have recently found strong evidence that major earthquakes (magnitude 8-9) have repeatedly occurred in the northwestern Pacific coast of the United States in the past few thousand years, most recently 300 years ago. This finding has prompted people to reinforce existing buildings and modify building codes in the area. These measures will save lives and reduce losses in future earthquakes.