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	rhatany rhathymia rhbdr. RHD rhe rhea rheadin rheadine rheagenine Rhea sister rhebok rhebuck Rhee, Syngman rhegosol rheic acid Rheic ocean rheid rheidity Rheims Rhein Rhein berry Rheingold Rheinlaender Rheinland Rheinland-Pfalz

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