Over the last five, ten years there's been some work done on this.

在过去五，十年里,有人做了一些有关笑的研究。

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And it's changed a bit over the last five to ten years. And now it's been gentrified.

在过去的五到十年里，这儿有了一些小变化，现在这儿改善得不错。

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