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130页（225字）
形容神气活现，目中无人，例这个陌生人大模大样地闯进办公室来，一副旁若无人的样子，让所有人都大吃一惊。
Everyone in the office was startled when this utter stranger swaggered into the office with a contemptuous look on his face．