undiscovered

the novel had lain undiscovered for years among his papers.

该小说多年来一直埋在他的文稿中不为人所知。

This previously undiscovered species is a cestoid parasite, up to 30 centimetres long and weighing up to 70 grams from the late Holocene.

这种之有被发现的物种来是全新世晚期，是一种绦虫，超过30厘米长和70克重。