美国英语充满了绚丽多彩、生动有趣的习语，这些习语内涵丰富、寓意深刻，且多源于美国政治、经济、历史、文化、生活等诸多方面。因此，探讨它们形成的背景不仅有助于我们准确理解和使用英语，学到了饶有兴趣的掌故和生动活泼的语言，而且能加深对美国的文化、历史、传统... American English is full of colorful, vivid and interesting idioms. These idioms are rich in connotation and profound in meaning, and are mostly derived from many aspects such as politics, economy, history, culture and life in the United States. Therefore, exploring their background not only helps us to understand and use English accurately, but also to learn interesting anecdotes and lively language, and to deepen our understanding of American culture, history and traditions.