ACKNOWLEDGMENTS

 The thanks of the publishers are due to: Messrs Chatto & Windus, Messrs Duckworth, and Messrs Houghton Miflin of Boston, U.S.A., for permission to include R. L. Stevenson's Walking Tours; Sir Leslie Stephen's In Praise of Walking; and Mr John Burroughs' The Exhilarations of the Road, from "Winter Sunshine"; also to Mr A. H. Bullen for the extract¹ from The Gentleman's Magazine.

1 extract   

vt.取出，提取，获得，摘录；n.摘录，提出物

参考例句：

• The article was a choice extract from her writings.这篇文章是从她的著作中摘录出来的精粹。
• We can extract oil from olive.我们可以从橄榄中榨油。