Visscher called bilingualism a “beautiful natural experiment”, because people grow up speaking two languages, and studies have shown that they reap certain cognitive benefits from switching between languages and determining which to respond with based on what’s going on around them. The University of Kentucky researchers took it a step further by using brain imaging, which she said was “exciting.”

　　维斯切将双语称为是一个“美丽的自然的实验”。研究显示，通过语言转换、根据周围的环境判断应该如何回应，说着两种语言长大的人能够在认知方面得到某些特定的益处。肯塔基大学的研究者们又进了一步，用脑成像的方式进行实验，维斯切说这种尝试 “令人激动”。

　　Gold said he grew up in Montreal, where he spoke French at school and English at home, prompting relatives to question whether his French language immersion would somehow hinder his ability to learn English.

　　古尔德说他在蒙特利尔长大，在学校说法语，在家说英语。他的亲戚也问他在法语的环境下长大是否会影响他学习英语的能力。

　　“Until very recently, learning a second language in childhood was thought of as dangerous,” he said. “Actually, it’s beneficial.”

　　“直到最近，人们还认为在童年学习第二门语言是危险的，”他说。“实际上，这样做是有益的。

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