Well, Butterfly knows how it will be: One fine day we'll notice a thread of smoke arising on the sea in the far horizon…… (See Butterfly's Aria).

反正蝴蝶相信这样的一天终将来临：当晴朗的一天，在那遥远的海面，我们看见了一缕黑烟……。

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But with a population as large as China's and over a long time horizon, the consequences of small differences in the fertility rate are far reaching.

但以中国这么大的人口总数，在经过较长时期过后，生育率的微小差别也会产生深远的影响。

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A harbor, which is, perhaps, the most beautiful and perfect in the world, stretched before him far to the west, till it was lost on the distant horizon.

这也许是世界上最美丽、最完美的海港，它向西一直横亘，直至在远处的地平线消失。

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Far in the distance, a neat line moves across the horizon, trailing puffs of cloud like a steam train.

BBC: In Sweden, a long journey home