跟读练习: Why Are Some Grapes Seeded and Others Seedless? - 通过视频学习英语口语

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Welcome back to History of Simple Things.
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Today's topic comes from one of our viewers at Arnold Kappel 6 ,933.
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Thanks for the suggestion.
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You asked: Why are some grapes seeded and others seedless?
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If you've ever snacked on grapes, added them to a salad, or wondered why some are smooth and easy to eat while others hide tiny seeds,
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you've probably noticed that not all grapes are the same.
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Some come with seeds, others don't, and the story behind this difference is surprisingly rich,
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spanning centuries of cultivation, genetics, and human innovation.
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So how did seedless grapes come to be, and why do some grapes still have seeds?
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Stick around as we uncover the fascinating journey of seeded and seedless grapes.
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right here on History of Simple Things.
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Thank you.
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To understand why grapes have seeds, or not, we first need to know a bit about the fruit itself.
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Grapes belong to the genus Vitus, with the most common species used for eating being Vitus vinifera.
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A grape is a type of berry, which is a fruit that develops from a single flower with one ovary.
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Normally, berries produce seeds as part of their natural reproductive process.
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ensuring the next generation Seeded grapes are the original form of the fruit.
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Thousands of years ago, all grapes had seeds, just like wild grapes today.
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These seeds are not just a nuisance.
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They contain the genetic material necessary to grow new grapevines.
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But humans, always looking for convenience, eventually began cultivating grapes that were easier to eat, seedless grapes.
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Seedless grapes are a result of human intervention and selective breeding.
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Unlike seeded grapes, seedless varieties do not produce fully developed seeds.
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Instead, they develop tiny, soft seed traces that are barely noticeable when eating.
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But how did this happen?
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The key is a process called parthenocarpy.
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Parthenocarpy is when fruits develop without fertilization.
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In simple terms, the grape thinks it has been pollinated so it grows into a fruit, but no seeds form.
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This natural phenomenon occurs in some wild grape varieties and plant breeders noticed it and worked to enhance it.
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cultivation, humans created grape varieties that consistently produced seedless fruits.
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Another method to propagate seedless grapes is through cuttings rather than planting seeds.
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Because seedless grapes cannot reproduce through seeds naturally,
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growers take cuttings from existing vines and grow new plants that are genetically identical.
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This is why a seedless grapevine day is essentially a clone of its parent.
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So, if seedless grapes are easier to eat, why do seeded grapes still exist?
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Seeded grapes aren't just a remnant of the past.
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They have several important advantages.
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First, many seeded grapes have more complex flavors.
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That's one reason they are often preferred for wine production.
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The seeds, skins, and even stems contribute to the taste profile of the wine,
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adding tannins and subtle notes that seedless grapes can't replicate.
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Second, seeded grapes are genetically more diverse.
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When you grow a seeded grape from its seed, it is not identical to the parent plant.
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breeding new varieties, improving disease resistance, and adapting to changing climates.
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Seedless grapes, being clones, are more uniform but less adaptable in the long term.
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Finally, some cultures simply prefer the taste and texture of seeded grapes.
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In many parts of the world, especially in Europe, seeded grapes are considered more traditional and are prized for their authenticity.
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You might be curious how the seedless grapes you buy at the store actually come to life.
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Modern seedless grape production relies on a combination of science and careful agriculture.
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First, growers select parent grape varieties that naturally produce small, underdeveloped seeds.
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Then through careful crossbreeding and sometimes chemical treatments, they enhance the seedless traits.
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The young grapevines are propagated using cuttings rather than seeds to maintain consistency.
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This ensures that each new plant will reliably produce seedless grapes.
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popular, especially in the United States and Asia, because people prefer them for snacking, fruit salads, and lunch boxes.
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In fact, today the majority of grapes sold as table grapes are seedless,
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while seeded varieties are mostly used for wine or specialty markets.
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Have you ever noticed that seeded grapes often taste richer or more complex than seedless ones?
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That's no coincidence.
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Seeds contain compounds like tannins and antioxidants that influence the flavor of the fruit.
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When you bite into a seeded grape, you're also experiencing subtle chemical interactions that add depth to the taste.
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Seedless grapes, on the other hand, tend to be sweeter and milder.
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They lack the slightly bitter notes that come from the seeds, which makes them more appealing to children and people who prefer a smooth, snackable fruit.
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Some food scientists argue that seedless grapes were bred specifically to satisfy this preference creating a fruit that is easy,
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sweet, and convenient.
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So, which should you choose?
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It depends on your priorities.
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If you want convenience, snackability, or something kid -friendly, seedless grapes are perfect.
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If you care about flavor depth, tradition, or experimenting with wine, seeded grapes might be worth exploring.
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In the end, both types of grapes tell a story.
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One about human ingenuity, taste preferences, and the art of cultivation, and the other about the resilience and adaptability of nature.
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Thank you for watching.
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If you have suggestions for our next video, feel free to share them in the comments below.
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We'll be sure to give you an acknowledgement for your contribution.
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Thank you for joining us on this journey through the history of simple things.
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Don't forget to like, subscribe, and stay tuned for more stories woven through the smallest details.
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本课的词汇与口语要点

这节 B2 级别的口语课以视频“Why Are Some Grapes Seeded and Others Seedless?”为素材。 视频中反复出现的词有：grape, seedless, seed, seeded, fruit。 这段视频共有 75 个句子、928 个单词可供跟读。 讲话部分时长为 7:57。 说话人语速平稳，每分钟约 117 个词，很适合跟读。 只有 70% 的单词属于英语最常用的 3,000 词，词汇难度较高。

视频中的重点词汇

视频中最难的 15 个单词，附发音和释义：

单词发音释义
grape 名词/ɡɹeɪp/葡萄, 提子
seedless 形容词/ˈsiːdləs/無核 /无核
grapevine 名词/ˈɡɹeɪp.vaɪn/葡萄藤, 葡萄樹 /葡萄树
cultivation 名词/ˌkʌltɪˈveɪʃən/开化, 教化
flavor 名词/ˈfleɪvə/味道, 味兒 /味儿
breed 动词/ˈbɹiːd/配種 /配种
parthenocarpy 名词單性結實 /单性结实
tannin 名词/ˈtænɪn/单宁, 鞣酸
clone 名词/kloʊn/克隆, 複製 /复制
snack 名词/snæk/零食, 小吃
berry 名词/ˈbɛɹi/漿果 /浆果, 莓
convenience 名词/kənˈvinjəns/方便, 便利
enhance 动词/ɪnˈhæns/改善
subtle 形容词/ˈsʌtəl/微妙
preference 名词/ˈpɹɛf(ə)ɹ(ə)ns/優選 /优选, 選擇 /选择

视频中的语法

说话人最常用的结构，并附上视频中的原话：

结构视频中的用法
被动语态 be + 过去分词 — 强调发生了什么，而不是谁做的has been pollinated · are often preferred · are considered
现在完成时 have/has + 过去分词 — 过去发生但与现在仍有关联的事you've ever snacked · you've probably noticed · has been pollinated
定语从句 who / which + 从句 — 补充说明人或事物berry, which is · seeds, which makes

需要注意的发音

说话人用了 8 次缩略和弱读形式，例如 don't, you've, aren't。请按听到的简短形式来说。

  • “sh” 和 “zh” 音: cultivation /ˌkʌltɪˈveɪʃən/, specialty /ˈspɛʃ.əl.ti/
  • 长单词——注意重音位置: cultivation /ˌkʌltɪˈveɪʃən/, genetically /d͡ʒəˈneɾɪkli/, acknowledgment /əkˈnɑ.lɪd͡ʒ.mənt/, adaptability /ədæptəˈbɪlɪti/, adaptable /əˈdæptəbəl/

中文母语者容易读错的音：

  • /v/ — 不要读成 /w/，上齿轻触下唇: grapevine /ˈɡɹeɪp.vaɪn/, cultivation /ˌkʌltɪˈveɪʃən/, flavor /ˈfleɪvə/, convenience /kənˈvinjəns/, cultivate /ˈkʌltɪveɪt/
  • 词尾辅音 — 要读清楚，后面不要加元音: grape /ɡɹeɪp/, seedless /ˈsiːdləs/, breed /ˈbɹiːd/, propagate /ˈpɹɒpəˌɡeɪt/, snack /snæk/
  • /r/ 和 /l/ 的区别: replicate /ˈɹɛplɪkeɪt/, resilience /ɹɪˈzɪl.ɪ.əns/, surprisingly /səˈpɹaɪzɪŋli/

如何用这段视频练习

  1. 先完整听一遍视频，不要开口，记下不认识的单词。
  2. 用正常速度逐句跟读，每句重复到你的节奏与说话人一致为止。
  3. 录下自己的声音并与原声对比，特别注意 grape, seedless, grapevine 这类单词。

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。

影子跟读法: 阅读完整分步指南 →