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      an illness that affects the brain and memory, and makes you gradually lose the ability to think and behave normally     Pol. demencja, otępienie umysłowe   学び始める
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      students should learn a second language to help prevent dementia in later life  
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      ability to speak two languages equally well    学び始める
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      the bilingualism could protect the brain in later life  
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      speaking or using only one language    学び始める
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      certain types of dementia appear up to five years later for people who speak a second language compared with monolinguists.  
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      able to speak more than two languages    学び始める
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      the beginning of something, especially something bad    学び始める
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      bilingual people have a cognitive reserve that delays the onset.  
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      the average length of time that someone will live or that something will continue to work    学び始める
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      It would be extremely beneficial in terms of child benefits and also benefits across the lifespan.  
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      to do something to try to protect yourself from something bad, such as illness, danger, or attack     Pol. zapobiec, ustrzec się przed, odeprzeć, powstrzymać   学び始める
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      even brief language courses could ward off decline in later life.  
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      a decrease in the quality, quantity, or importance of something     Pol. spadek, zmiejszanie się, pogarszanie się   学び始める
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      even brief language courses could ward off decline in later life.  
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      before something else happens or is done     Pol. wcześniej, zawczasu, z wyprzedzeniem   学び始める
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      we tested them beforehand and after a week of a very intensive course  
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      being common at a particular time, in a particular place, or among a particular group of people     Pol. powszechność występowania, przewaga, dominacja   学び始める
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      we think we could reduce the prevalence of dementia by around 30 per cent  
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      a ____ illness gradually gets worse and cannot be stopped    学び始める
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      Dementia is a degenerative disorder  
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      to make something happen very quickly, especially a series of events    学び始める
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      a degenerative disorder that trigger a gradual loss of brain function - thinking, remembering and reasoning.  
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      to form a particular amount or part of something, to be the reason why something happens, to explain     Pol. stanowić, wytłumaczyć, wyjaśnić   学び始める
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      Alzheimer's is the most common form of dementia, accounting for around 62 per cent of all diagnosed cases.  
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      Pol. wszystko wskazuje na to że liczba tego wzrośnie    学び始める
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      the number is set to rise     An estimated 850,000 people in the UK have dementia, with the number set to rise to more than a million by 2025.  
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