シャドーイング練習: These Solar-Powered Carnivorous Flatworms Divide and Conquer | Deep Look - 動画で英語スピーキングを学ぶ
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64 文
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1
Those aren't cornflakes.
2
This rock is absolutely covered with tiny marine flatworms called acyles.
3
They're not just an animal.
4
They're also kind of a plant.
5
And they're practically immortal.
6
They use simple eyes called ocelli to seek out the sunniest spots on tropical coral reefs,
7
where they spread themselves out like beach blankets.
8
But they don't just lay around sunbathing all day.
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Aseals are also skilled hunters.
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They catch prey by engulfing them with their body and jamming them into their mouth.
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You can see their meal trying in vain to escape.
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Also, they don't have a butt.
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Their poop just goes right back out through their mouth.
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So you wouldn't want to kiss one.
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They aren't just hunters.
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These acyls are gardeners, too.
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See those green dots?
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Those are algae.
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And those reddish cells belong to the acyl itself.
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When the sun hits our flatworm friend, the algae inside produce sugars through photosynthesis.
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This is a waste.
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Researchers think they share those sugars with their host.
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In return, the acyl provides its, um, waste, which is kind of like fertilizer for the algae.
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And the acyl protects its houseguests.
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Researchers think the acyls pack toxic chemicals in those reddish cells.
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So predators tend to leave them alone.
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Without its algae, the acyl would eventually die, even if it had plenty of prey to eat.
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Scientists call a creature like this a Holobiant — a single being made up of two or more completely different species.
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In this case, a solar -powered predator.
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But that's not even the weirdest thing about them.
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Researchers at Stanford University and the University of San Francisco are studying A -seals because of how they regenerate.
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And to do that?
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It'll be okay.
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I promise.
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You'd think getting cut in half would be a bad thing.
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But within minutes, the wounded front half seals up.
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In a couple days, it'll have a whole new tail. And the backside?
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It doesn't just make a new head.
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It makes two!
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But it's hard to share one body with two heads.
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So each half eventually pulls away from the other.
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Where there was once one acyl, now there are three.
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What seemed like a moment of doom was actually one of rebirth.
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But they don't need the researcher's scalpel.
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Aseals can drop their tail and clone themselves on their own.
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The Aseal and its algae can multiply themselves like this over and over, indefinitely, making them functionally immortal.
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Aseals can do this because they're packed with stem cells, which morph into any body part the Aseal needs to regrow.
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And since they can't hunt until they grow new heads, they're extra reliant on the energy they get from their algae.
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In these desperate times, the acyls even eat some of their algae.
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Sorry.
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Every relationship has its challenges.
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But the acyl and its algae have a deal.
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By taking advantage of each one's abilities, they're greater than the sum of their parts.
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Hey, it's Laura.
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Guess who else could be considered a holobiant?
56
You.
57
You've got a whole zoo of bacteria and other living things inside your gut that are vital to a healthy immune system, digestion, and even mood.
58
And if you want to keep
59
Deep Look healthy, support our show on Patreon.
60
For a very limited time, if you become a $10 a month Patreon supporter, you'll get a fabulous
61
Deep Look pint glass, and at $5 a month, a special Deep Look sticker.
62
We can't make these videos without you.
63
Join us on Patreon now.
64
Link in the description.
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このレッスンの語彙とスピーキングのポイント
このスピーキングレッスンは、動画「These Solar-Powered Carnivorous Flatworms Divide and Conquer」を教材にしています。 繰り返し出てくる語は次のとおりです：acyl, algae, Aseal, Patreon, researchers。 この動画には、シャドーイング用の文が64文、単語が591語あります。 音声の長さは5:03です。 話す速さは1分あたり約117語で安定しており、シャドーイングしやすいペースです。 英語の頻出3,000語に含まれる単語は76%だけなので、語彙は難しめです。
この動画の重要語彙
動画に出てくる覚えておきたい単語15語を、発音と意味つきで紹介します。
| 単語 | 発音 | 意味 |
|---|---|---|
| researcher 名詞 | /ˈɹiˌsɝ.t͡ʃɚ/ | 研究員, 研究者 |
| hunter 名詞 | /ˈhʌntɚ/ | 猟犬, 狩犬 |
| tail 名詞 | /ˈteɪ̯l/ | 尻尾, しっぽ |
| seal 名詞 | /siːl/ | 印章, はんこ |
| prey 名詞 | /pɹeɪ/ | 獲物 |
| immortal 形容詞 | /ɪˈmɔɹtəl/ | 不滅の, 死なない |
| predator 名詞 | /ˈpɹɛd.ə.tɚ/ | 天敵 |
| meal 名詞 | /ˈmiːl/ | 食事, めし |
| mood 名詞 | /muːd/ | 気分, 気持ち |
| skill 名詞 | /skɪl/ | 腕, 技 |
| belong 動詞 | /bɪˈlɒŋ/ | 所属する, 属する |
| desperate 形容詞 | /ˈdɛs.p(ə.)ɹɪt/ | 絶望的な |
| butt 名詞 | /bʌt/ | お尻 |
| toxic 形容詞 | /ˈtɒk.sɪk/ | 毒性 |
| wound 名詞 | /ˈwund/ | 傷, 怪我 |
注意したい発音
話し手はthey're, don't, aren'tなど、短縮形や弱形を20回使っています。聞こえたとおりの短い形で発音しましょう。
- 「th」の音: photosynthesis /ˌfoʊ.toʊˈsɪn.θə.sɪs/, rebirth /ɹiːˈbɜːθ/, sunbathe /ˈsʌnbeɪð/
- 長い単語（アクセントの位置に注意）: practically /ˈpɹæk.tɪ.k(ə.)li/, indefinitely /ɪnˈdɛfɪnɪtli/, photosynthesis /ˌfoʊ.toʊˈsɪn.θə.sɪs/, regenerate /ɹiːˈd͡ʒɛnəɹeɪt/
日本語話者が苦手な音：
- /r/ と /l/ の区別 — /l/ は舌先を歯茎につけ、/r/ はどこにもつけない: immortal /ɪˈmɔɹtəl/, practically /ˈpɹæk.tɪ.k(ə.)li/, tropical /ˈtɹɑ.pɪ.kəl/, coral /ˈkɔɹəl/, flatworm /ˈflæt.wəɹm/
- /v/ — /b/ にならないように、上の歯を下唇に当てる: vital /ˈvaɪtəl/, vain /veɪn/
- /f/ — 「フ」ではなく、上の歯と下唇で出す: fabulous /ˈfæbjʊləs/, reef /ɹiːf/, indefinitely /ɪnˈdɛfɪnɪtli/, flatworm /ˈflæt.wəɹm/, cornflakes /ˈkɔɹnfleɪks/
この動画での練習方法
- まず声を出さずに動画を最後まで聞き、知らない単語をメモします。
- 通常の速度で一文ずつシャドーイングし、話し手のリズムに合うまで繰り返します。
- 自分の声を録音して元の音声と比べます。researcher, hunter, tailなどの単語に特に注意しましょう。
シャドーイングとは？英語上達に効果的な理由
シャドーイング（Shadowing）は、もともとプロの通訳者養成プログラムで開発された言語学習法で、多言語習得者として知られるDr. Alexander Arguelles によって広く普及されました。方法はシンプルですが非常に効果的：ネイティブスピーカーの英語を聞きながら、1〜2秒の遅延で声に出してすぐに繰り返す——まるで「影（shadow）」のように話者を追いかけます。文法ドリルや受動的なリスニングと異なり、シャドーイングは脳と口の筋肉が同時にリアルタイムで英語を処理・再現することを強制します。研究により、発音精度、抑揚、リズム、連音、リスニング力、そして会話の流暢さが大幅に向上することが確認されています。IELTSスピーキング対策や自然な英語コミュニケーションを目指す方に特におすすめです。