他们转向如电视、电脑、互联网、录像带、光盘和音频设备一类的电子媒体，按下按钮就可自娱自乐。

They turn to electronic media such as television, computers, the Internet, videos, CDs and audio equipment, which can provide them with instant self-entertainment at the push of a button.

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例如，这个国家可能会将其数目巨大的太阳能电池板制造设备年度采购更多地由美国供应商转向德国供应商。

The country might, for example, shift more of its hefty annual purchases of solar panel manufacturing equipment to German suppliers instead of American ones.

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后来他将精力转向医疗设备领域，他发现了一个有趣的事：心脏起搏器在身体里就像一颗小卫星一般。

When he turned his attention to medical devices, he had the key insight that a pacemaker is like a tiny satellite within the body.

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The good news is that we are going to be shifting gears very soon and moving into subject matter unlike anything you have seen in high school, and so you will get a fresh start.

好消息是我们将,马上运行设备并且转向主要课题,不想你在高中所学的任何知识，所以你将有个新的开始。

麻省理工公开课 - 固态化学导论课程节选