所以如果你想想电子地图，还有上周学的列举法，你就会发现一般最简单的方法，都是指数递增的。

So if you think about the way something like, say, Mapquest works, and last week in recitation you looked at the fact that shortest path is exponential.

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该业务的下滑已导致三星电子目前股价较年初累计下跌12%，而同期韩国综合指数则上涨近30%。

The benchmark Korea Composite Stock Price Index, or Kospi, meanwhile, is up almost 30% for the year.

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试图保持电子元件能力指数式增长的工程师们有两个难题：将元件做的更小和使元件散发更少的废热。

Engineers trying to maintain the exponential growth in the power of electronics have two preoccupations: making components smaller and making them produce less waste heat.

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