Green is also the color used to describe the powerful emotion, jealousy. The green-eyed monster is not a frightening creature from outer space. It is an expression used about four hundred years ago by British writer William Shakespeare in his play "Othello."绿色还可用来表示一种强烈的感情:嫉妒。green-eyed monster(绿眼怪兽,引申为嫉妒)不是一种来自外太空的可怕生物。这个表达是大约400年前英国作家莎士比亚在剧本《奥赛罗》中用到的。