Prática de Shadowing: Radioactive Waste - Aprenda a falar inglês com vídeo
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Waste is an unavoidable consequence of everyday life.
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In terms of volume, radioactive waste is a very small portion of all waste.
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It's the byproduct of millions of medical procedures each year, industrial and agricultural applications that use radiation,
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and nuclear reactors that generate around 10 % of global electricity.
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Radioactive waste requires careful management to protect people and the environment from radiation now and in the future.
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Radioactive waste is first characterized to determine its physical and chemical properties as well as its radioactivity.
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It's then processed, which may include sorting, decontamination and steps to reduce volume.
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The waste is classified based on its long -term management objectives
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and put into a safe condition for interim storage and, ultimately, disposal.
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Very low -level waste and low -level waste contain small amounts of radioactive substances.
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It includes waste generated by industries and hospitals or items such as clothes used in nuclear facilities.
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This waste requires minimal isolation and is suitable for disposal in near -surface facilities.
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Intermediate -level waste is more radioactive and typically comprises materials from decommissioned reactors and research laboratories.
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It requires more containment and isolation.
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High -level waste presents the greatest hazard.
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It accounts for a minute portion of the total volume of all radioactive waste and includes waste from nuclear power plants.
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High -level waste requires greater containment and its disposal is planned in engineered facilities several hundred meters underground.
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In the meantime, it is safely stored in purpose -built facilities.
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The IAEA provides support to countries in the safe management of all radioactive waste.
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Sobre esta lição
Você está praticando inglês com "Radioactive Waste" usando a técnica de Shadowing.
O que é a Técnica de Shadowing?
Shadowing é uma técnica de aprendizado de idiomas com base científica, originalmente desenvolvida para o treinamento de intérpretes profissionais. O método é simples, mas poderoso: você ouve áudio em inglês nativo e repete imediatamente em voz alta — como uma sombra seguindo o falante com 1-2 segundos de atraso. Pesquisas mostram melhora significativa na precisão da pronúncia, entonação, ritmo, sons conectados, compreensão auditiva e fluência na fala.