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Before you plan to improve the world, look around your own house three times.

在你计划改善世界之前，先看看你自己的房子三次。

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Many have gone on to do important scientific work but all remember those wonderful times when we and our science were young and our excitement in meeting new challenges knew no bounds.

许多人继续从事重要的科学工作，但所有人都记得那些美好的时光，那时我们和我们的科学还很年轻，我们迎接新挑战时的兴奋是无限的。

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Children laugh an average of three hundred or more times a day; adults laugh an average of five times a day, we have a lot of catching up to do.

孩子们平均每天笑三百次或更多;成年人平均每天笑五次，我们还有很多事情要做。

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