1、

Sedimentary rocks are thus tagged by the fossils which they contain.

沉积岩就这样以它们所含的化石作为鉴别的标记.

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2、

Oftentimes, these fossils are not made available to science at all.

科学界常常压根接触不到这些化石。

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3、

The fossils appear to be an early form of seaweed washed up on a beach.

这些化石看上去是被海水冲上岸的一种早期的水藻。

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4、

The fossils at Dinosaur Cove are embedded in hard sandstones.

恐龙峡谷中的化石都嵌在坚硬的砂岩中。

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5、

The fossils may be a million years old.

这些化石可能有100万年了.

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6、

Glauconite, detrital carbonate skeletal debris, marine fossils, and collophane are commonly present.

海绿石 、 碳酸盐骨骸碎屑 、 海相化石和胶磷矿普遍出现.

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7、

Fossils allow us to reconstruct ancient ecology.

化石可以让我们知道古时的生态环境。

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8、

Animals and plants of remote antiquity turned to fossils.

远古的动植物变成了化石.

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9、

Tow factors are favorable for the preservation of organisms as fossils.

有两个因素对生物化石的保存是有利的.

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10、

Scientists have dated the fossils by their bone structure.

科学家根据那些化石的骨骼结构确定其年代.

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11、

The rocks themselves bear another kind of evidence -- the fossils.

岩石本身还拥有另一种证据 ― ―化石.

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12、

fossils over two million years old

两百多万年的化石

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13、

They were searching for fossils.

他们在找化石.

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14、

The geologist found many uncovered fossils in the valley.

在那山谷里,地质学家发现了许多裸露的化石.

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15、

Different fossils have been preserved in different ways-some as moulds or casts.

不同类别的化石是以不同的方式保存下来的 ― ―有的如同模型或模压品.

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16、

Fossils of the new species, Australopithecus sediba, were discovered in 2008 in a cave in South Africa.

2008年在南非一个洞穴内发现一个新物种化石,称做南方古猿sediba。

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17、

The period is an especially muddled one for palaeontology, being full of fragmentary fossils that are difficult to assign either to Homo or to Australopithecus.

古生物学上这段时期是一片模糊地带,这时期的化石凌乱琐碎,很难归类是直立猿人还是南方古猿。

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18、

He found many fewer fossils that time, but enough to conclude he was looking at a new species, which he named Australopithecus sediba.

那次他找到的化石比这次少得多,但也足以得出找到了新物种的结论,他把该新物种命名为南方古猿源泉种(Australopithecus sediba)。

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19、

Currently, they are performing further study on these fossils.

目前, 他们正在对这批化石作进一步研究.

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20、

The scientific investigation team found many mammoth fossils in the forest.

科考人员在森林中发现了很多毛象的尸骨化石.

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