Shadowing Practice: Hope for the White Rhino: Scientists Create 38 Embryos in Conservation Breakthrough | 4K | N18G - Learn English Speaking with Video
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Now only two female white rhinos living on earth.
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Scientists are trying to revive the subspecies through in vitro fertilization.
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The team has been able to produce 38 embryos.
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The hope is to use the closely related southern white rhinos as surrogates.
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And this process is a scientific first in the animal conservation field.
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Joining us now is Dr. Suzanne Holtz.
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She's a scientist with BioRescue.
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Dr. Suzanne, welcome to the show.
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I understand from my team that you won the ground in Kenya with BioRescue, the consortium, as we mentioned, that is helping to rescue the rhinos.
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Talk us through how you facilitated the rescue, the process, and whether you've been successful at all.
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Yes, so far we have,
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since 2019, been collecting all sites in the younger of the two last female northern white rhinos,
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Fatou is her name, and we have so far created these 38 embryos.
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We have before, in the past decade,
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done this in southern white rhinos to optimize and develop this technology.
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And so it's basically a team of three reproductive scientists who are in the back of the animal harvesting the oocytes.
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So one needs to operate the ultrasound probe, which helps to see where to puncture.
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One operates the needle and one operates the flushing devices.
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So we empty the follicles and hope to find the oocytes in the follicles we harvest
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and we're looking at some of the photos sorry i'm just
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going to say we're looking at some of the photos
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that you sent in in terms of the fro the protest but go ahead you said the samples are then sent
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to italy and they are yeah their embers are developed into
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and cry preserved which we now use for performing embryo transfers in kenya again
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and so it's quite challenging to yeah i was going to say the challenging part i mean
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if we look at the the two i think is nanjin
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and fatu and they i mean these are very large animals right and if i understand they can't have babies
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for for health reasons collecting you know viable embryos for from such large creatures,
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that is a challenge in itself, right?
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It is indeed.
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Special devices have been developed to help us get a huge challenge.
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Of course, this procedure also needs anesthesia to keep both the humans involved
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and the animals safe and uh yeah it is a big endeavor
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and it involves a lot of people it's a huge team effort
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in the end has it been i suppose what many viewers
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will want to know doctor it has it been successful the in vitro is completed has it been successful
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so successfully we've created 38 embryos so far
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and we have proven in the sun white rhino which is the sister taxon of the sister species.
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They are considered to be subspecies.
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But in the Southern White Rhino we were able to do a successful embryo transfer, which means we could show that we can connect the entire cycle.
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We can harvest oocytes, fertilize them with cryopreserved sperm in the lab, grow embryos, freeze the embryos, and then thaw them again in the field
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and bring them back into a live surrogate female and create a new rhino baby.
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How quickly do you think you can help raise the number of northern white rhinos?
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I mean how long will this process take?
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So this is to predict
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but we are now starting to perform embryo transfers with northern white rhino embryos in southern white rhino surrogate mothers
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and we are quite optimistic that in the near future we will be successful
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and we will be able to to increase the number of
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northern white rhinos from two to three doctor in humans for example no go ahead finish your thought you knew
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that the video broke up the first successful embryo transfer in humans took over 100 trials
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so we hope to be much quicker than this
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but i'm very optimistic we will reach this goal in in the near future.
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Here's hoping they're beautiful creatures.
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Doctor, really appreciate it.
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Thank you very much indeed.
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Woordenschat en spreektips bij deze les
Deze spreekles op niveau B2 is gebaseerd op de video “Hope for the White Rhino: Scientists Create 38 Embryos in Conservation Breakthrough”. Deze woorden komen het vaakst terug: rhino, embryo, successful, transfer, animal. Deze video bevat 55 zinnen en 689 woorden om na te spreken. Het gesproken deel duurt 4:50. De spreker praat in een gelijkmatig tempo van ongeveer 142 woorden per minuut, prettig om te shadowen. 82% van de woorden hoort bij de 3.000 meest gebruikte Engelse woorden; de rest kun je beter vooraf bekijken.
Belangrijke woorden in deze video
De 15 moeilijkste woorden uit de video, met uitspraak en betekenis:
| Woord | Uitspraak | Betekenis |
|---|---|---|
| embryo zelfstandig naamwoord | /ˈɛmbɹi.oʊ/ | embryo |
| oocyte zelfstandig naamwoord | /ˈoʊ.oʊ.saɪt/ | oöcyt |
| surrogate zelfstandig naamwoord | /ˈsʌɹəɡɪt/ | vervanger, plaatsvervanger |
| harvest zelfstandig naamwoord | /ˈhɑɹ.vəst/ | oogst |
| follicle zelfstandig naamwoord | /ˈfɑlɪkəl/ | follikel |
| subspecies zelfstandig naamwoord | /ˈsʌbspiːʃiːz/ | ondersoort |
| optimistic bijvoeglijk naamwoord | /ˌɒptɪˈmɪstɪk/ | optimistisch |
| anesthesia zelfstandig naamwoord | /ˌæn.əsˈθi.ʒə/ | verdoving, anesthesie |
| fertilize werkwoord | /ˈfɜː(ɹ)tɪlaɪz/ | bemesten |
| optimize werkwoord | /ˈɑptɪmaɪz/ | optimistisch zijn/handelen |
| puncture werkwoord | /ˈpʌŋkt͡ʃɚ/ | puncteren |
| ultrasound zelfstandig naamwoord | /ʌl.tɹə.saʊnd/ | ultrageluid |
| endeavor zelfstandig naamwoord | /ɛnˈdɛv.ɚ/ | inspanning, ijveren |
| revive werkwoord | /ɹɪˈvaɪ̯v/ | herleven |
| consortium zelfstandig naamwoord | /kənˈsɔː.ti.əm/ | consortium |
Phrasal verbs die je zult horen
| Woord | Betekenis |
|---|---|
| take over werkwoord | overnemen |
Grammatica in deze video
De structuren die de spreker het meest gebruikt, met de exacte woorden uit de video:
| Structuur | In de video |
|---|---|
| Present perfect have/has + voltooid deelwoord — iets uit het verleden dat nu nog telt | has been · you've been · have been developed |
| Lijdende vorm be + voltooid deelwoord — het gaat om wat er gebeurt, niet om wie het doet | are then sent · are developed · have been developed |
| Betrekkelijke bijzinnen who / which + zin — extra informatie over een persoon of ding | rhino which is · transfer, which means |
Uitspraak om op te letten
De spreker gebruikt 8 samentrekkingen en verkorte vormen, zoals I'm, we're, can't. Spreek ze kort uit, zoals je ze hoort.
- De klanken “sh” en “zh”: subspecies /ˈsʌbspiːʃiːz/, anesthesia /ˌæn.əsˈθi.ʒə/, flush /ˈflʌʃ/
- Lange woorden — let op de klemtoon: optimistic /ˌɒptɪˈmɪstɪk/, anesthesia /ˌæn.əsˈθi.ʒə/, consortium /kənˈsɔː.ti.əm/, reproductive /ˌɹiːpɹəˈdʌktɪv/, facilitate /fəˈsɪlɪteɪt/
Klanken die Nederlandstaligen lastig vinden:
- Stemhebbende eindmedeklinker — /b/, /d/, /g/, /z/, /v/ niet verscherpen: subspecies /ˈsʌbspiːʃiːz/, fertilize /ˈfɜː(ɹ)tɪlaɪz/, optimize /ˈɑptɪmaɪz/, ultrasound /ʌl.tɹə.saʊnd/, revive /ɹɪˈvaɪ̯v/
Zo oefen je met deze video
- Luister de hele video één keer zonder te spreken en noteer de woorden die je niet kent.
- Spreek zin voor zin na op normale snelheid en herhaal elke zin tot je ritme gelijk is aan dat van de spreker.
- Neem jezelf op en vergelijk met het origineel; let daarbij op woorden als embryo, oocyte, surrogate.
Wat is de Shadowing-techniek?
Shadowing is een wetenschappelijk onderbouwde taalleermethode die oorspronkelijk is ontwikkeld voor professionele tolkentraining en gepopulariseerd door polyglot Dr. Alexander Arguelles. De methode is eenvoudig maar krachtig: je luistert naar native Engelse audio en herhaalt het onmiddellijk hardop — als een schaduw die de spreker volgt met slechts 1–2 seconden vertraging. In tegenstelling tot passief luisteren of grammaticadrills, dwingt shadowing je hersenen en mondspieren om echte spraakpatronen tegelijkertijd te verwerken en te reproduceren. Onderzoek toont aan dat het de uitspraaknauwkeurigheid, intonatie, ritme, verbonden spraak, luisterbegrip en spreekvaardigheid aanzienlijk verbetert — waardoor het een van de meest effectieve methoden is voor IELTS Speaking-voorbereiding en echte Engelse communicatie.