Mid 19th century; earliest use found in W. E. H. Lecky (1838–1903), historian. From classical Latin perambulant-, perambulāns, present participle of perambulāre.
英语词典包含243303条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。