单词	D region
释义	D region noun : the lowest part of the ionosphere occurring approximately between 30 and 55 miles (50 and 90 kilometers) above the surface of the earth Word History First Known Use 1930, in the meaning defined above
随便看	inappositely inappositeness inappositenesses inappreciable inappreciably inappreciation inappreciative inappreciatively inappreciativeness inappreciativenesses inapprehensions cytolymph cytolyses cytolysin cytolysins cytolysis cytolytic cytolytic T cell cytolytic t cells cytolytic t lymphocyte cytolytic t lymphocytes cytolyzate cytolyze cytome cytomegalic

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