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- This hexagonal trace fossil Paleodictyon nodosum dated tens of millions of years ago may be created by a creature that is still alive in the deep Atlantic Ocean. 这些有数千万年的六角形痕迹化石,可能由一种现今仍然生存在大西洋海底的生物造成。
- The trace fossil assemblage of the Jidula Formation is referred to the Skolithos ichnofacies formed in high-energy subtidal shoreface and inte rtidal foreshore environments. 基堵拉组中的遗迹化石组合可归属于在高 能的潮下带的临滨和潮间带的前滨环境下产生的Skolithos遗迹相。
- The ichnofacies is the grouping of characteristic trace fossil association tending to rscirrence through a rather long interval of geologic time,and their environmental implication. 遗迹相是指一组具有特征的遗迹化石组合,在一段相当长的地质时期中不断的重视以及它们的环境意义。
- Determination of three Middle Jurassic lake coastal zones by trace fossils in Ta ibei sag, Turpan basin, Northwest China. 根据遗迹化石确定台北凹陷中侏罗世湖岸带。
- He found a piece of fossil of an ancient bird. 他发现一块古代鸟类的化石。
- This fossil may be over 2 million years old. 这化石可能超过二百万年了。
- Can you date the fossil exactly? 你能确定这化石的确切年代吗?
- I can't trace that letter you sent me. 我找不到你寄给我的那封信。
- He spoke without a trace of emotion. 他说话时毫不动感情。
- Did the police find any trace of the murderer? 警方找到凶手的行踪了吗？
- They failed to find any trace of the runaways. 他们未能找到逃跑者的任何踪迹。
- There was barely a trace of salt in the soup. 汤里简直一点盐也没有放。
- The post office tried to trace the lost letter. 邮局设法查出那封丢失的信。
- The kids are learning to trace the letter. 孩子们学描字母。
- He always spoke with a trace of sarcasm. 他说话总带着一丝讽刺。
- Trace fossil types from the Lower Cretaceous strata and palaeoclimates in the Minhe Basin 民和盆地下白垩统遗迹化石的类型与气候的关系
- Isn't Professor Bell an old fossil? 贝尔教授真是个老顽固。
- The powerhouse was trace out accurately later on a large scale map. 后来发电站被精确地描画在大比例地图上。
- A microscopic fossil, as of a pollen grain or unicellular organism. 微体化石一种微小的化石，如花粉粒或单细胞有机体的化石
