n person who contributes (money to a fund, articles to a magazine, etc) 捐款人; 捐助者; 投稿者.

n[C]
someone who gives money, help, ideas etc to something that a lot of other people are also involved in
　campaign contributors
contributor to
　Dr Win was a major contributor to the research.
someone who writes a story, song, speech etc that forms part of a larger work such as a newspaper, book, broadcast, recording etc
contributor to
　a regular contributor to Time magazine
formal someone or something that helps to cause something to happen
contributor to
　Cars are still one of the principal contributors to air pollution.