英语词汇half-life的意思、用法及释义-英汉双解词典

单词	half-life
释义	half-life n time taken for the radioactivity of a substanceto fall to half its original value 半衰期（某物质的放射性元素由原有量衰减到一半所需的时间）.
随便看	sabre-toothed tiger sac saccharin saccharine sacerdotal sacerdotalism sachet sack sackcloth sackful sacking sack-race sacrament sacramental sacred sacredly sacredness sacrifice sacrificial sacrificially sacrilege sacrilegious sacrilegiously sacristan sacristy

英汉双解词典包含38652条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。