单词	lifespan
释义	lifespan /ˈlʌɪfspan / noun The length of time for which a person or animal lives or a thing functions: the human lifespan... As humans lengthened lifespans with better nutrition and hunting skills, childhood also lengthened. They are slow-breeding and long-lived animals, achieving lifespans of 70 years or so. I suggested that extending human lifespans might lead to extended creativity.
随便看	miter drain miter gage miter-gate miter gear miter-jointed miter plane miter saw miter shooting board miter snake miter square miterwort mite society mite typhus mitey Miteyawin Mitford mithai mithan mither mithqal Mithradates VI Mithraeum Mithraic Mithraism Mithraist

英语词典包含243303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。