extant [ˈɛkstənt, ɛkˈstænt]

例句:

• Many of Lucia's extant papers reside at SUNY-Buffalo.
  来自NEWYORKER
• Two fourteenth-century manuscripts of this text are still extant.
  这个文本仍有两份14世纪手抄本存世。
  
• extant remains of the ancient wall
  尚存的古城墙遗迹
  
• Some of Washington's letter are extant.
  华盛顿的有些信件仍然被保留着.
  
• There is no 'creation model' extant in science.
  来自SA
• It is the only extant member of the genus Stephanoaetus.
  来自BBC