The area of wetlands in China has become larger over the past five years, growing by 202,600 hectares and making a great contribution to water quality and environmental protection.

5年来，中国湿地面积增加了20.26万公顷，为水质和环境保护做出了重要贡献。

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The average over the past five years has been 52 days' worth.

而过去五年的平均值为52天的存量。

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But over the past five years or so there has been a marked improvement.

但在过去五年左右的时间里，这一问题有了明显改善。

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Experts say Aquarius will gather as much information about sea surface salinity as has been collected by ships over the past one hundred twenty-five years.

VOA: special.2011.06.22

But the company, which tripled sales over the past five years, is far from infallible.

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That group accounts for half of Americans' population growth over the past five years.

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Over the past five years the best existing stuff has been bid up too high.

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