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.
这个美国人独自在洛特尼斯岛跳水时被杀。洛特尼斯岛离澳大利亚首都珀斯约2000公里，是印度洋很受欢迎的度假圣地。
The man, a US national, was killed while diving alone off Rottnest Island, a popular getaway in the Indian Ocean about 20 km (12 miles) west of the Western Australia state capital, Perth.
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