跟读练习: 3 things that can cause painful periods - Chen X. Chen - 通过YouTube学习英语口语
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In 1920, Hungarian physician Béla Schick ran a highly questionable experiment: he asked several women, some on their periods, to briefly hold flowers.
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In 1920, Hungarian physician Béla Schick ran a highly questionable experiment: he asked several women, some on their periods, to briefly hold flowers.
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Then, without proper controls and relying solely on his own observations, he claimed that the blooms held by the menstruating women wilted more quickly.
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Schick’s explanation for this was not only unscientific, but also played into age-old myths about periods.
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He concluded that menstruating women’s bodies released toxins, excreted in sweat and blood, that can kill plants.
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While it unfortunately took decades to debunk Schick’s so-called menstrual toxin hypothesis, some good did come from this work— the idea prompted investigations into the composition of menstrual fluid, eventually leading to a discovery that helped explain a very real problem: period cramps.
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Anywhere from 50 to 90% of people who menstruate deal with painful abdominal or pelvic cramps during their period, a condition known as dysmenorrhea.
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Individual experiences can vary, from mild discomfort, to throbbing aches, to contraction-like cramps that rival the pain of labor.
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Cramping can extend into the back and thighs, and be accompanied by bloating, nausea, and even vomiting.
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And for at least 10% of people who menstruate, these symptoms are so severe that they disrupt their day-to-day activities.
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Healthcare experts classify dysmenorrhea into two main types: primary and secondary dysmenorrhea.
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For some, menstrual cramps can be traced back to underlying conditions, including endometriosis, where tissue similar to the uterine lining grows outside the uterus, or uterine fibroids, which are non-cancerous growths.
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This type of pain is called secondary dysmenorrhea.
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While these cases can be linked to specific conditions, the origins of pain are often not well understood.
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For example, endometriosis can lead to scarring and inflammation, and uterine fibroids can push against other organs, both of which can cause discomfort.
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Yet the intensity of cramp pain doesn’t always match the severity of these factors.
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And because the conditions are so variable, so is the treatment.
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Primary dysmenorrhea, on the other hand, is much more common, and it refers to painful menstrual cramps that can’t be linked to an underlying condition.
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Despite how misguided Schick's experiments were, they set a path toward better understanding this pain.
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While early researchers obviously never found a menstrual toxin in the 1960s and 70s, scientists studying menstrual fluid did discover the presence of compounds called prostaglandins.
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And further research showed that many people with painful period cramps often had higher levels of prostaglandins in their menstrual fluid.
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One important role of prostaglandins is to stimulate the muscles of the uterus to contract, an essential step in shedding the uterine lining during a period.
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So it’s thought that an excess of prostaglandins may intensify these contractions, causing pain.
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This process can also cause blood vessels to constrict, reducing the flow of oxygen and releasing chemicals that activate pain receptors.
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Since many over-the-counter pain medications, like naproxen and ibuprofen, work by targeting prostaglandins, they can provide relief for some people with period pain.
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Others find hormone-based contraceptives that thin the uterine lining and, in turn, reduce prostaglandin production to be helpful.
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But while prostaglandin research was foundational and shaped the way we understand menstrual pain, in recent years, it’s become evident that prostaglandins are just part of the story.
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Many other factors likely contribute to painful cramping, including hormones, inflammation, brain pathways, and perhaps even the microbiome.
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And because period pain is not fully understood, existing treatments don't always work for everyone.
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On top of that, talking about menstrual cramps can feel awkward or even taboo, leading many people to feel that they have to simply put up with the pain.
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But regularly suffering from severe cramping is far from benign.
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Some experts believe that repeated exposure to pain can cause the nervous system to become more sensitive, leaving a person vulnerable to developing chronic pain conditions.
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That's why more research is needed to untangle the complex drivers of this surprisingly common experience and to develop better treatments.
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That work can start with recognizing that period pain is real, and it affects hundreds of millions of people.
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关于本课
在这一课中，学习者将通过观看视频，了解与痛经相关的生理和医疗知识，同时练习英语听力和口语技能。视频探讨了痛经的成因、症状以及治疗方法，让学习者不仅能提升语言能力，还能掌握一些医学术语。通过看YouTube学英语，您将获得丰富的英语学习体验。
关键词汇与短语
- 痛经 (dysmenorrhea) - 月经期间的腹痛和不适。
- 内膜异位症 (endometriosis) - 子宫内膜组织在子宫外生长的病症。
- 激素 (hormones) - 在身体中影响许多生理过程的化学物质。
- 前列腺素 (prostaglandins) - 促进子宫收缩并引发疼痛的化合物。
- 缓解 (relief) - 减轻痛苦或不适。
- 对话 (conversing) - 与他人进行交流。
- 影子跟读 (shadow speech) - 随着视频逐句练习发音和语调。
练习技巧
以下是一些在观看视频时进行shadow speak的建议，帮助您改善英语发音和口语表达：
- 选择一个舒适的环境，确保你可以专注于视频内容。
- 调整视频播放速度，若需要，放慢速度以便更好地理解发音与语调。
- 在观看时，尝试shadow speech，即在听到句子之后立即跟读。注意语调和重音，帮助内化句子的节奏与流畅度。
- 如果在某些部分感到困难，可以反复播放该段以加强记忆，并模仿说话者的语气和发音。
- 在每次练习之后，可以尝试总结视频中讨论的要点，并使用新学的词汇来表达自己的理解。
通过这些技巧，您将能够更有效地提升自己的英语口语能力，同时获取有关痛经的医学知识，帮助您在语言学习和生活中更为自信。
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。