extant

extant
[ɪkˈstant, ɛk-, ˈɛkst(ə)nt]
adjective
  1. (especially of a document) still in existence; surviving
    (尤指文件)尚存的;现存的
    an extant letter.
    还没弄丢失的信。
语源
  1. mid 16th cent. (in the sense 'accessible, able to be publicly seen or reached'): from Latin exstant- 'being visible or prominent, existing', from the verb exstare, from ex- 'out' + stare 'to stand'
英语宝典
考试词汇表