• Over long periods of time, these small changes result in the creation of new species.

    VOA: special.2009.12.01

  • We're trying to understand exactly what changes in your brain when you learn and how those changes persist over time to support memory. And one thing that we know which helps explain why some things are easier to remember than other is that learning is not a unitary process.

    我们一直都想查明,学习的时候,大脑到底发生了什么变化,这些变化是如何长时间控制记忆的,我们都知道,学习的过程不是一元化的,这就是为什么有的东西好记,有的东西难记。

    斯坦福公开课 - 7个颠覆你思想的演讲课程节选

  • A related report looked at genetic changes in cattle over time.

    VOA: special.2009.05.05

  • Over time,genes develop changes, known as mutations.

    VOA: special.2010.02.02

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