单词	sporadic E layer
释义	sporadic E layer noun : a layer of ionization occurring irregularly within the E region of the ionosphere Word History First Known Use 1949, in the meaning defined above
随便看	tin glaze tin hat tin liquor tin lizzie tin lizzies tin lu tin mountain tin opener tin ore tin oxide Tin Pan Alley tin pants tin peninsula tin pest tin plague tin process tin putty tin pyrites tin salt tin soldier tin spirit tin spot tin stream tin streaming tin tack

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