The Bilingual Brain

More than half of the world's population is thought to speak at least two languages.

据信，世界上超过一半的人口至少会说两种语言。

For bilingual people, both languages remain active in the brain at the same time.

对于双语者来说，两种语言在大脑中始终同时处于活跃状态。

Switching between them requires the brain to constantly manage competing information.

在两种语言之间切换，需要大脑不断处理相互竞争的信息。

Some researchers believe this practice strengthens skills such as attention and flexibility.

一些研究人员认为，这种做法能增强注意力和灵活性等能力。

Other studies, however, have failed to find consistent advantages.

然而，其他研究并未发现一致的优势。

There is some evidence that bilingualism may delay the symptoms of dementia.

有一些证据表明，双语可能会延缓痴呆症状的出现。

Learning a language as an adult is challenging, but it is never too late to benefit.

成年后学习一门语言很有挑战性，但想要从中受益永远不嫌晚。

Beyond the brain, speaking another language opens doors to new cultures and perspectives.

除了对大脑有益之外，说另一种语言还为我们打开了通往新文化和新视角的大门。

Perhaps that is the most valuable reward of all.

也许这才是最宝贵的回报。