跟读练习: What is Arteriovenous Malformation (AVM)? - 通过YouTube学习英语口语
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Today we're talking about arteriovenous malformations or AVM for short.
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34 句
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Today we're talking about arteriovenous malformations or AVM for short.
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A lot of times people ask me, what is an AVM or an arteriovenous malformation?
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And it's a very good question.
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Arteriovenous malformations can be very complicated.
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I'd like to draw an AVM for you so you can help understand this process.
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An AVM is basically a tangle of very, very immature blood vessels in the brain.
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in the brain.
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It almost looks like a bird's nest, but very immature arteries.
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There are many arteries that feed into an AVM, and typically there are very large veins that drain the AVM.
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I'll label these to be clear.
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These are veins and these are arteries.
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The arteries or fire hoses is bring a lot of pressure and blood into the AVM.
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And veins, as you remember, veins you have in your arm are very soft and weak.
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And these veins don't like the amount of blood flow that comes through the AVM.
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This AVM lives in the brain tissue.
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And so it's a potential that all this blood going through the AVM can cause the AVM to break or bleed, which can cause very, very serious problems in the brain.
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Approximately three to 4% of AVMs will rupture every year.
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So neurosurgeons like to treat AVMs to prevent that from happening.
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There are many different treatment strategies to treat an arteriovenous malformation into someone's brain and I'll quickly go through all those.
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The first one and one of the most tried and true procedures is brain surgery to physically remove the AVM from the brain.
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The way this is done is with a small incision on the scalp.
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We remove some bone from the skull, which we put back later, and we physically remove the AVM.
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An AVM is removed by coagulating or sacrificing arteries that feed the AVM to reduce the blood flow.
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Then we coagulate and remove the veins, and we physically then take the AVM out of the brain.
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This cures the AVM.
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Now sometimes AVMs have so much blood flow that go into them that we need to slow that blood flow down before surgery.
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This way we can accomplish by taking blood catheters up into our AVM and injecting various substances like glue or a material called onyx, which is like black toothpaste that can slow down the AVM.
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These catheters are placed in the artery and then we simply inject that material in the AVM to slow the AVM down.
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We don't think we can cure the AVM with that approach but it helps us to operate on the AVM because there's less blood flow.
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The last option I'll discuss is something called gamma knife radiosurgery which is a form of radiation therapy that is very accurately targeted to the AVM.
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It's an outpatient procedure.
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You only need typically one dose of radiation and that radiation over two to three years potentially helps melt or remove the AVM from the brain.
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This is a minimally invasive approach, and some patients like this approach for their AVM.
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The decision on what treatment modality to use is a complex decision, and we can discuss this further at your clinic visit.
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为什么要通过这个视频练习口语？
在学习英语的过程中，提高口语表达能力至关重要。通过观看并模仿视频中的对话，学习者可以更好地理解专业术语和复杂的概念。这个视频讨论了“动静脉畸形（AVM）”，为学习者提供了一个生动的医学内容背景，帮助他们在具体语境中练习口语。利用这个视频，您可以在家中进行英语影子跟读，模仿视频中的发音和语调，从而提升您的英语发音能力。
语法与表达在语境中的应用
在视频中，有几个重要的语法结构和表达方式值得注意：
- 被动语态：例如，“AVM是由血管形成的道理”。使用被动语态可以强调动作的承受者，帮助学习者更好地理解专科名词的运用。
- 条件句：如“如果AVM破裂，可以导致严重的问题”。通过学习条件句，可以帮助学习者在不同情境下表达可能发生的结果。
- 名词短语：如“动静脉畸形的治疗策略”。名词短语的使用可以丰富表达，提升语言的专业性，适合医学或科技类的讨论。
常见发音陷阱
在视频中，一些词汇可能会让学习者产生发音误区：
- “Arteriovenous”：这个词的发音较为复杂，学习者可以分成几个部分练习，例如“arterio”和“venous”分别发音。
- “Malformation”：强调开头的音节，有时会使得学习者忽略重音。反复练习时，可以通过录音和反复听来注意重音的变化。
- 专业术语：例如“coagulating”和“radiosurgery”，这些词在日常口语中不常使用，反复练习有助于提高英语发音的准确性。
通过这个视频，学习者可以不断提高对特定医学术语的发音，同时也能通过看YouTube学英语的方式，慢慢适应不同的发音和语调。以此提高整体的英语能力，增强自信，迈出更进一步的学习之路。
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。