望其项背,也作望其肩背、望其肩项,源于项背相望。《后汉书·左雄传》:“监司项背相望,与月疾疢,见非不举,闻恶不察。”李贤注“:项背相望谓前后相顾也。”这是说前后两者相距不远。后演化为“望其项背”,意为赶得上或比得上,多用于否定式。例1成都五牛俱乐部一、二、三线球队 Looking at their terms, they are also looking forward to shouldering their shoulders and looking at their shoulders. “Zhu Han Xiong Xiong Biography”: “The supervisory department is on the back of the project, and on the one hand, he does not mention it, and he does not listen to it. He does not listen to evil.” Li Xian noted: “Beside each other, we also say that we are close together.” The two are not far apart. Later evolved to “look at their backs,” meaning to catch up or match, mostly for negative. Example 1 Chengdu Wuniu Club First, second and third team