Over the past decade, though, neuroscientists have realised that young neurons do continue to appear in the brains of mature mammals-but what they might do is only now being pieced together.

虽然在过去十年中，神经学家们已经意识到成年哺乳动物的大脑内的确不断出现年轻的神经元，然而这些神经元可能起什么作用直到最近才弄明白。

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Older men are not more mature. They just have more money, which makes them appear more mature.

年纪越大不见得越成熟。他们只是格外有钱而已，而这就让他们显得格外成熟。

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Market continues to develop and mature, and new groups appear, changes in consumer demand, competitors Nokia and Ericsson enter cell phone market into the product stage of the preliminary subdivision.

市场的不断开发和成熟，新的群体出现，消费者需求发生变化，竞争者诺基亚和爱立信进入手机市场，进入产品初步细分阶段。

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This picture of a technological ecosystem in which mature firms are gobbled up while new ones appear has a lot in common with the history of biotechnology.

ECONOMIST: MONITOR

It is perfectly true that as new professions or industries mature, early entrants will seek to impose standards, and sometimes they may appear to be absurd.

ECONOMIST: Europe's new treaty