Late Middle English; earliest use found in John Trevisa (c1342–?1402), translator. From outbreak + -ing.
Late 16th century; earliest use found in Samuel Daniel (?1563–1619), poet and historian. From outbreak + -ing.
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。