empty forest

Fitzpatrick, Rob. Glass Half Empty. The Word. No. 114. August 2012: 74–79.  Buskin, Richard. Classic Tracks: The Cure 'A Forest'. Sound on Sound. December

ML，树与森林可互递归定义如下，允许空树： datatype 'a tree = Empty | Node of 'a * 'a forest and 'a forest = Nil | Cons of 'a tree * 'a forest 如同在递归数据类型上的算法可以自然由递归函数给出，互递归数据结构上的

  Redford, Kent H. The Empty Forest: Many large animals are already ecologically extinct in vast areas of neotropical forest where the vegetation still

Place that operated from 1975 until 1988. After demolition, the site sat empty until 2018, when it was redeveloped into luxury homes. 妙谷初級學校（Mill Valley

英国主題 "The Doctor Dances" 在 BBC《異世奇人》的主頁 "The Empty Child" / "The Doctor Dances" 在 異世奇人: 時間（旅行）簡史 "The Empty Child" / "The Doctor Dances" 在 異世奇人參考導覽 Doctor