出处：按学科分类—语言、文字 中国对外翻译出版公司《汉英成语词典》第100页（300字）
指人无缘无故地自相惊扰，例乡间盛传出现怪兽，闹得鸡犬不宁，其实是庸人自扰。所谓怪兽，不过是一条野狗罢了。
A rumour went about in the village that a strange beast was roaming around．This created a commotion and caused unnecessary worry because the so-called strange beast turned out to be but a wild dog．