单词	zeptosecond
释义	zep·to·sec·ond (zĕptō-sĕk′ənd) n. Abbr. zs or zsec One sextillionth (10-21) of a second.
随便看	uro- uro- urochordate urochrome urodele Ur of the Chaldees urogenital urogenital system urogenous urogram urographic urography urokinase urolith urolithiasis urolithic urologic urological urologist urology -uronic uropod uropygial uropygial gland uropygium

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