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单词 deposit date
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PBS地球-动物趣闻

There, the crew prospected the Hell Creek Formation, a world-famous deposit dating back to the very late Cretaceous Period - one that's known for fossils of Tyrannosaurus rex.

在那里,工作人员对地狱溪组进行了勘探,这是一个世界著名的矿床, 可追溯到白垩纪晚期——以霸王龙化石而闻名。

PBS地球-动物趣闻

In rock formations in modern-day New Mexico and Texas, they found phosphorus in deposits dating to the late Ordovician Period, when the American Southwest was underwater, and just as plants were getting a foothold on land.

在现代新墨西哥州和得克萨斯州的岩层中,他们在奥陶纪晚期的沉积物中发现了磷,当时美国西南部处于水下,植物刚刚在陆地上立足。

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