这本书是唯一现存的副本。

This book is the only extant copy.

城市中现存的中世纪建筑很少。

Few extant buildings from the medieval period remain in the city.

这些文件是现存的最古老的记录之一。

These documents are among the oldest extant records.

这首诗唯一现存的手稿在博物馆里。

The only extant manuscript of the poem is in the museum.

现存的法律需要修订以反映现代社会。

The extant laws need to be revised to reflect modern society.

这个物种是地球上现存的最古老的生物之一。

This species is one of the oldest extant organisms on Earth.

这个建筑是该地区现存的最古老的建筑之一。

This building is one of the oldest extant structures in the area.

这些艺术品是博物馆中现存的最珍贵的藏品。

These artworks are the most valuable extant pieces in the museum.

由于气候变化，许多现存的物种面临灭绝的风险。

Many extant species are at risk of extinction due to climate change.

现存的记录为研究古代文明提供了宝贵的见解。

The extant records provide valuable insights into ancient civilizations.