单词	femtosecond
释义	fem·to·sec·ond (fĕmtə-sĕk′ənd) n. One quadrillionth (10-15) of a second.
随便看	Swabia Swabian swaddle swaddling clothes swag swage swage block swagger swaggerer swaggeringly swagger stick swagman Swahili Swahilian swain Swainson's hawk Swainson's thrush SWAK swale swallow swallow swallower swallowtail swallow-tailed swallow-tailed coat

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。