您要查找的是不是：
- nautiloid fossils 鹦鹉螺化石
- 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?
- Isn't Professor Bell an old fossil? 贝尔教授真是个老顽固。
- 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
- If we squander our fossil fuels, we threaten civilization. 如果我们浪费矿物燃料，我们就威胁文明。
- It depends on the identification of zone fossils. 它依赖于分带化石的鉴别。
- Igneous rocks do not contain fossils. 火成岩不含化石。
- The gossip tossed the mossy blossom fossil. 爱讲闲话者向上抛长满苔藓的花化石。
- The fossils had been chipped out of the rock. 那些化石已从岩石上被凿了下来。
- A finite list of choices; our finite fossil fuel reserves. 为数有限的选择; 我们有限的矿物燃料贮量
- There you can see a lot of dinosaur egg fossils. 那里你可以看到很多恐龙蛋和化石。
- The dinosaur fossils is a national treasures. 科学家们为了研究恐龙化石。
- Fossils allow us to reconstruct ancient ecology. 化石可以让我们知道古时的生态环境。
- The solid matter in which a fossil or crystal is embedded. 基质，脉石嵌有化石或水晶的固体物质
- Embed a post in concrete;fossils embedded in shale. 把柱子嵌在水泥中；牢牢嵌在页岩中的化石
- They were searching for fossils. 他们在找化石。
- The fossils may be a million years old. 这些化石可能有100万年了。
- Dinosaur fossils are our national treasures. 教授:恐龙化石是我们的国宝。
