钱学森早年曾留学美国,师从世界著名航空学巨擘冯·卡门教授,这为他日后在高速空气动力学和喷气推进领域的发展奠定了坚实的基础。照理来说,他应该感恩美国,报答美国。但他却不!自从1955年回国以后,他就再也不愿踏上美国国土,即使后来美国人要授予他荣誉奖章,即 Qian Xuesen had studied in the United States in his early years, under the guidance of Professor Feng Carmen, a famous aviation giant in the world, which laid a solid foundation for his future development in the field of high-speed aerodynamics and jet propulsion. In theory, he should be grateful to the United States and repay the United States. But he did not! Since returning to China in 1955, he has never wanted to embark on the land of the United States, even if the Americans later award him the Medal of Honor,