举溪长为例，一条2公里的溪长是1公里溪长的两倍；一条10公里的溪长，只比9公里的溪长多11%。

For example, a 2km stream is twice as long as a 1km stream; by contrast, a 10km stream is only 11% longer than a 9km stream.

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与此同时，在原来那个农场，那个买下农场的人一天碰巧跨过农场里的一条小溪，他看见溪底有什么东西在闪闪发光。

Meanwhile, back at the farm, the man who had bought his farm happened to be crossing a small stream on the property one day when he saw something gleaming at the bottom of the stream.

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这对雄海狸来说可不是好事，因为没有了白杨树它们无法在河溪里筑坝。

And that was a problem for Johnny beaver, because without the aspens he couldn't dam the rivers and streams.

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