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单词	fact of life
释义	fact of life noun phrase 1 : something that exists and must be taken into consideration 2 facts of life plural : the fundamental physiological processes and behavior involved in sex and reproduction Word History First Known Use circa 1806, in the meaning defined at sense 1
随便看	radio frequency radio galaxy radio link radio marker radio meteor radio navigation radio observatory radio proximity fuse radio range radio range beacon radio range station radio receiver radio relay radio set radio silence radio source radio spectrum radio star radio sun radio telescope radio transmitter radio tube radio wave radio- radio-collar

英语词典包含469781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。