早早学习第二门语言可以在晚年为大脑抵御认知衰退。
Learning a second language early can inoculate the mind against cognitive decline in old age.
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解释
使…获得免疫力，预防（比喻义，抵御认知衰退/知识层面）
Learning a second language early can inoculate the mind against cognitive decline in old age.
使…获得免疫力，预防（比喻义，抵御认知衰退/知识层面）