澳大利亚珀斯默多克大学生物学家夏洛·奥斯卡姆和同事们探究认为，世界上现存的蛋壳化石普遍都具有弹性膜的特征。

Biologist Charlotte Oskam and colleagues at Murdoch University in Perth, Australia, said eggshell is a resilient membrane that is frequently found in fossil deposits around the world.

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本课程是提供了关于西澳大利亚州公立大学的代表-西澳大利亚大学，科廷科技大学和默多克大学埃迪斯·科文大学。

The course is provided on behalf of the Western Australian public universities - the University of Western Australia, Curtin University of Technology, Murdoch University and Edith Cowan University.

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然而，默多克大学科学与技术研究所的研究小组的研究证实了城市人口和工作密度在几十年的下降之后从二十世纪八十年代以来反而增长或保持不变。

However, the ISTP team's research demonstrates that the population and job density of cities rose or remained constant in the 1980s after decades of decline.

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