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- Fossil seashells trace the evolution of various mollusks through millions of years. 各种不同的软体动物,可以用化石海贝来追溯长达几百万年的演化史。
- A soft,compact calcite,CaCO3,with varying amounts of silica,quartz,feldspar,or other mineral impurities,generally gray-white or yellow-white and derived chiefly from fossil seashells. 白垩一种松软的方解石粉块,CaCO3,含有不等量的硅石、石英、长石或其它矿物杂质,通常为灰白色或黄白色,从贝类化石中制得。
- A soft, compact calcite, CaCO3, with varying amounts of silica, quartz, feldspar, or other mineral impurities, generally gray - white or yellow - white and derived chiefly from fossil seashells. 白垩一种松软的方解石粉块,CaCO3,含有不等量的硅石、石英、长石或其它矿物杂质,通常为灰白色或黄白色,从贝类化石中制得
- A soft, compact calcite, CaCO3, with varying amounts of silica, quartz, feldspar, or other mineral impurities, generally gray-white or yellow-white and derived chiefly from fossil seashells. 白垩一种松软的方解石粉块,CaCO3,含有不等量的硅石、石英、长石或其它矿物杂质,通常为灰白色或黄白色,从贝类化石中制得
- 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
- She walk along the beach collect seashell. 她沿海滩收集海贝。
- 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。
- Why Susie sells seashell by the seashore? 苏西为何会在海边卖贝壳?
- Drawstring waist with seashell charms on ties. 腰部设有抽绳,系带上有贝壳装饰;
- Now I 'm looking for a starfish.And a seashell. 现在我要来找海星和贝壳.
- The gossip tossed the mossy blossom fossil. 爱讲闲话者向上抛长满苔藓的花化石。
- 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
- 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
- Coal is usually referred to as a fossil fuel. 煤通常被称为矿物燃料。
- The fossil may over 2 millon years. 这化石可能超过二百万年了.
- Put the diamond in a seashell, and present it to her on the beach. 把钻饰放在贝壳里,在海边送给她。