跟读练习: Computer in China Tops List of World's Most Powerful - 通过YouTube学习英语口语
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Music From VOA Learning English,
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Music From VOA Learning English,
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this is the Technology Report.
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China's Tianhe-2 supercomputer has been rated number one on the top 500,
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a list of the world's most powerful computers.
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Experts measured the supercomputer's performance at 33.86 petaflops,
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or quadrillions, of operations per second.
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China's National University of Defense Technology developed the supercomputer,
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which runs twice as fast as the number-two rated Titan supercomputer.
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That machine belongs to the U.S government's Oak Ridge National Laboratory in the southern state of Tennessee.
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Tianha 2 and Titan are part of the race to make supercomputers faster and more powerful.
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So, what is a supercomputer?
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A basic personal computer has one microchip at the center of its operations.
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This central processing unit, or CPU,
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carries out a set of commands as part of a pre-designed program.
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The first supercomputers had a few more CPUs.
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The number grew, as microprocessors became cheaper and faster.
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Andrew Grimshaw is a computer science professor at the University of Virginia.
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He says many supercomputers today are called parallel machines.
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Instead of one CPU, they have thousands.
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These parallel machines are made up of many individual computers called nodes.
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are positioned in one block.
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They use a lot of power,
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create a lot of heat,
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and require huge cooling systems.
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They also use programs different from the ones used by ordinary computers.
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Grimshaw says anyone with enough resources can build a supercomputer to solve problems that require millions of mathematical calculations.
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For VOA Learning English, I'm Carolyn Prasuti.
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背景与背景介绍
在这段来自VOA Learning English的科技报告中，主持人介绍了中国最新的天河二号超级计算机，这是世界上性能最强大的超级计算机。通过对计算机性能的测评，专家确认其达到每秒33.86千万亿次运算的能力。天河二号是由中国国防科技大学研发的，速度是排在第二的美国泰坦超级计算机的两倍。这段视频不仅为我们展示了超级计算机的发展历程，也揭示了科学家们在这个科技领域不断努力提升计算速度和计算能力的背景。通过观看这类视频，学习者可以提高英语口语能力，并掌握相关领域的专业术语。
日常交流的五个关键短语
- 超级计算机 (supercomputer)
- 运算速度 (performance speed)
- 每秒操作次数 (operations per second)
- 数字处理单元 (central processing unit, CPU)
- 并行计算机 (parallel machines)
了解这些关键短语能帮助学习者在讨论科技话题时更加自信。同时，这也是进行 英语口语练习 的好机会，有助于记忆和理解相关概念。
逐步影子跟读指南
为了更好地掌握这一视频中的内容，以下是一个逐步的 英语影子跟读 指南，帮助学习者有效提高发音和流利度：
- 选择视频段落： 从视频中选取一小段，约30秒到1分钟，确保内容和词汇适合自己的水平。
- 先听后读： 首先全神贯注地听一遍，集中注意力在发音和语调上。
- 逐句跟读： 将视频暂停，逐句重复发音，确保模仿语调和节奏。
- 复述内容： 在心中理解内容后，尝试不看字幕进行复述，尽量使用新学的关键短语。
- 反复练习： 不断重复上述步骤，直到能够流利自然地表达。
通过进行 英语影子跟读，学习者不仅可以提高自己的发音，增强听力理解，还可以不断积累与科技相关的专业词汇，让自己在讨论这些话题时更加得心应手。利用 看YouTube学英语 的方式，实践起来会更加生动有趣！
什么是跟读法？
跟读法 (Shadowing) 是一种有科学依据的语言学习技巧，最初开发用于专业口译员的培训，并由多语言者Alexander Arguelles博士普及。这个方法简单而强大：您在听英语母语原声的同时立即大声重复——就像是一个延迟1-2秒紧跟说话者的影子。与被动听力或语法练习不同，跟读法强迫您的大脑和口腔肌肉同时处理并模仿真实的讲话模式。研究表明它能显着提高发音准确性，语调，节奏，连读，听力理解和口语流利度——使其成为雅思口语备考和真实英语交流最有效的方法之一。