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去年,我国著名科学家钱学森在北京逝世,享年98岁。钱老长期在科学研究的尖端领域呕心沥血,却能如此高寿,奥妙何在?钱学森的儿子钱永刚
Last year, Qian Xuesen, a famous scientist in China, died in Beijing at the age of 98. Qian long-term scientific research in the cutting-edge areas make painstaking efforts, but can so longevity, mysterious where? Qian’s son Qian Yonggang