本书的主题范围包括：密码学、地热能和流行感冒，这些主题是令人激动的，每个科目的介绍必然是短暂的，但内容却十分丰富。
The range of topics -- including cryptography, geothermal energy, and influenza -- is breathtaking, and the treatment of each subject is necessarily brief but informative.
本书的主题范围包括：密码学、地热能和流行感冒，这些主题是令人激动的，每个科目的介绍必然是短暂的，但内容却十分丰富。
The range of topics -- including cryptography, geothermal energy, and influenza -- is breathtaking, and the treatment of each subject is necessarily brief but informative.
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