scientists study fossils to understand the history of life on earth.
科学家研究化石以了解地球上的生命史。
ammonite fossils are commonly found in sedimentary rock layers.
菊石化石常见于沉积岩层中。
the museum displays a rare collection of dinosaur fossils.
博物馆展出了稀有的恐龙化石藏品。
paleontologists excavated well-preserved fossils from the ancient riverbed.
古生物学家从古河床中挖掘出了保存完好的化石。
index fossils help geologists determine the relative age of rock strata.
标准化石帮助地质学家确定地层的相对年龄。
living fossils like the coelacanth have remained unchanged for millions of years.
像腔棘鱼这样的活化石数百万年来保持不变。
fossil fuels are formed from the decomposed remains of ancient organisms.
化石燃料是由古代生物的遗骸分解而成的。
marine fossils found on mountaintops indicate that the area was once under water.
在山顶发现的海洋化石表明该地区曾经位于水下。
the trace fossils include footprints and burrows rather than body parts.
遗迹化石包括脚印和洞穴，而不是生物的肢体部分。
the rapid burial of the animal was crucial for the formation of these fossils.
动物的迅速掩埋对这些化石的形成至关重要。
we visited a site famous for its abundance of plant fossils.
我们参观了一个以大量植物化石闻名的遗址。
scientists study fossils to understand the history of life on earth.
科学家研究化石以了解地球上的生命史。
ammonite fossils are commonly found in sedimentary rock layers.
菊石化石常见于沉积岩层中。
the museum displays a rare collection of dinosaur fossils.
博物馆展出了稀有的恐龙化石藏品。
paleontologists excavated well-preserved fossils from the ancient riverbed.
古生物学家从古河床中挖掘出了保存完好的化石。
index fossils help geologists determine the relative age of rock strata.
标准化石帮助地质学家确定地层的相对年龄。
living fossils like the coelacanth have remained unchanged for millions of years.
像腔棘鱼这样的活化石数百万年来保持不变。
fossil fuels are formed from the decomposed remains of ancient organisms.
化石燃料是由古代生物的遗骸分解而成的。
marine fossils found on mountaintops indicate that the area was once under water.
在山顶发现的海洋化石表明该地区曾经位于水下。
the trace fossils include footprints and burrows rather than body parts.
遗迹化石包括脚印和洞穴，而不是生物的肢体部分。
the rapid burial of the animal was crucial for the formation of these fossils.
动物的迅速掩埋对这些化石的形成至关重要。
we visited a site famous for its abundance of plant fossils.
我们参观了一个以大量植物化石闻名的遗址。
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