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The fossils are embedded in hard sandstones.化石嵌在了坚硬的砂岩中。The valley contains fossils of many extinct species.这个山谷里有许多已经灭绝的物种的化石。Plant fossils are abundant in some types of rock.在某些类型的岩石里，植物化石很丰富。The most spectacular dinosaur fossils can be seen in this museum.那些最引人注目的恐龙化石可在这个博物馆中看到。The exhibition at the Natural History Museum includes fossils of amphibious creatures from millions of years ago.自然历史博物馆的展览包括数百万年前水陆两栖动物的化石。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。The plant's presence in the ancient world is attested by fossils that have been found.所发现的化石证明这种植物在古代就存在。We found fossils of lobsters with their antennae intact.我们发现了触须完好的龙虾化石。The fossils lie embedded in a matrix of shale and sandstone.化石牢牢嵌在页岩与砂岩形成的脉石中。The fossils are over 100 million years old.这些化石有一亿多年了。Roy had a passionate amateur interest in fossils.罗伊对化石有浓厚的业余兴趣。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。Archaeologists have been unable to date these fossils.考古学家无法确定这些化石的生成年代。The area is a treasure trove of fossils. 这一地区是化石宝库。He says the school's directors are a bunch of old fossils. 他说学校的主管是一帮思想僵化的老顽固。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。Scientists use various techniques to date fossils.科学家们使用各种技术确定化石形成的年代。Looking at these fossils, I see some similarity to modern-day birds.看着这些化石，我发现它们和现代鸟类有些相似之处。They found fossils of shelly animals.他们发现了有壳动物的化石。Most of these fossils are too small to be easily spotted.这些化石大多数都太小了，不易发现。The rocks are dated by examining the fossils found in the same layer.通过查看在同一岩层里发现的化石来鉴定岩石的年代。 |