Speaking two languages rather than just one has obvious practical benefits in an increasingly globalized world. But in recent years, scientists have begun to show that the advantages of bilingualism are even more fundamental than being able to converse with a wider range of people. Being bilingual, it turns out, makes you smarter. It can have a profound effect on your brain, improving other skills not related to language. This view of bilingualism is remarkably different from the understanding of bilingualism through much of the 20th century.

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在日益全球化的世界里，會說兩種語言比只會說一種語言具有明顯的實際好處。但是近年來，科學家開始證實，熟諳兩種語言有著比能夠與更多的人交流還要重要的優勢。事實證明，會說兩種語言讓人變得更聰明。掌握雙語會對人的大腦產生深遠的影響，還能提高與語言無關的其他能力。有關雙語能力的這種觀點，與20世紀大部分時間里人們對雙語的理解有著明顯的不同。

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