In recent years, scientists have begun to show that the advantages of bilingualism are even more important than being able to converse with a wider range of people.
近年来，科学家开始表明双语的优势比与更多人进行交流更为重要。
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"In the last 20 years or so, there's been a virtual explosion of research on bilingualism," says Judith Kroll, a professor at the University of California, Riverside.