英语词汇“earthquake”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	earthquake
释义	earthquake \ˈ ̷ ̷ˌ ̷ ̷\ noun Usage: often attributive Etymology: Middle English erthequake, from erthe earth + quake : a shaking or trembling of the earth that accompanies mountain building or other crustal movements including those caused by deposition of heavy loads of sediment on the sea bottom; that usually has an actual double amplitude of vibration of less than one millimeter, though a range of 76 millimeters is on record and the amplitude is commonly increased in unconsolidated surface material; and that is divisible into the two major classes volcanic and tectonic according to the major precipitating factor — see aftershock, focus 7, foreshock
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