形容詞 extant:

1. still in existence; not extinct or destroyed or lost- Edward Clodd

1. This law is ancient but still extant.
   這一法律古老但仍然有效。
2. The earliest extant manuscript of this poem has been kept in the museum.
   此詩(shī)現(xiàn)存最早的原稿收藏在這座博物館里。

ex.tant

adj.（形容詞）
Still in existence; not destroyed, lost, or extinct:
現(xiàn)有的，未遺失的，未毀的：尚存的；未遭毀滅的，未失去的或未滅絕的：
例句：
extant manuscripts.
尚存的手稿

Archaic Standing out; projecting.
【古語(yǔ)】 顯著的：明顯的；顯而易見的

來源：
Latin exst3ns exstant- [present participle of] exst3re [to stand out]
拉丁語(yǔ) exst3ns exstant- [] exst3re的現(xiàn)在分詞 [顯著的]
ex- [ex-]
ex- [前綴，表.…之外.]
st3re [to stand] * see st3-
st3re [站立] *參見 st3-