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	Beebe bee block beebread beech Beecham beechdrops beech-drops Beecher beech marten beechnut beedi beedi bee-eater beef beefalo beef bourguignon beefcake beefeater beefiness bee fly beefsteak beefsteak plant beefsteak tomato beef stroganoff beef up

英语词典包含135693条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。