"What we know from research on teen brain development, is that teens don't really have fully developed brains until they're twenty-five years old.
VOA: special.2010.07.01
If you collapse data, as we did in this one paper, across all developed and developing countries here's what we're expecting in the next twenty-five years.
如果想改变这个情况,就像这页幻灯片中指出的,改变所有发达国家和发展中国家,对未来二十五年的情况的预期
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