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单词	sierra
释义	sierrasi‧er‧ra /siˈerə/ noun [countable] Word Origin WORD ORIGINsierra Origin: 1500-1600 Spanish, Latin serra ‘saw’ Examples EXAMPLES FROM THE CORPUS A brief review of the structure of sierra society will illustrate this point. There are approximately three million persons residing in the sierra who speak only Quechua or Aymara. They know a white sierra car was seen stalking the area and are warning other house owners to be on their guard. a row or area of sharply pointed mountains
随便看	emission credit emissions trading emit emitter Emmenthal Emmerdale Emmy emo emoji emollient emolument e-money emote emoticon emotion emotional emotionalism emotionally emotive emotively empanel empathetic empathize empathy emperor

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