Forming nouns denoting an action or activity which is carried on for a very long time or on a very large scale, typically to raise funds for charity.
On the pattern of (mar)athon.
英语词典包含464360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。