明尼苏达大学和蒙特利尔的麦吉尔大学的一项新研究着眼于这种衰退发生的区域和程度。
A new study by the University of Minnesota and McGill University in Montreal looks at where, and how far, this decline is occurring.
接下来的四天我们也只能等待，除了看机修工想方设法把麦铁尔达修好，因为我们下面要走的是最可怕的一段路——西澳大利亚的大沙漠。
Which was all we could do for the next four days, except watch a mechanic struggle to get Matilda back on the road for the most fearsome stretch yet: the Great Sandy Desert of Western Australia.
艾达化石如此特殊的原因之一就是她保存完美，这是由于位于德国达姆施塔特附近的麦赛尔化石遗址是一个环境非常优越的地方。
One reason Ida is so special is her exquisite preservation, and that is because the Messel pit, near Darmstadt in Germany, is a very exceptional place.
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