单词	septuagenarian
释义	septuagenariansep‧tu‧a‧ge‧nar‧i‧an /ˌseptʃuədʒəˈneəriən $ -ˈner-/ noun [countable] Word Origin WORD ORIGINseptuagenarian Origin: 1700-1800 Latin septuagenarius ‘containing seventy’, from septuaginta ‘seventy’ someone who is between 70 and 79 years old
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