fossil 四级六级考研雅思GMAT

The fossils may be a million years old.

这些化石可能有100万年了。

Glauconite, detrital carbonate skeletal debris, marine fossils, and collophane are commonly present.

海绿石、碳酸盐骨骸碎屑、海相化石和胶磷矿普遍出现。

The man is a fossil.

那人是个老顽固。

Inland foraminifer fossils are considered as one of good indicators of marine facies.

内有孔虫化石群被一些学者视为是海侵或残留海的指相化石。

According to the conodont and fusulinid fossils,their ages are determined to be Devonian-Permian.

根据所含化石确定地层形成代为泥盆纪至二叠纪。

They were searching for fossils.

他们在找化石。

In the pale light of the tunnel, 30-foot fossil traces of lycopsid gleam slickly in the shale roof like alligator skins.

它们看起来像一棵棵巨型的芦笋。在隧道内黯淡的灯光下，页岩顶部30英尺长的石松化石遗迹就像鳄鱼皮般出柔滑的光亮。

The total sedimentation was that rivers were branching and migrating frequently,and the sedimentary structures and fossil of ichnite were growing generally.

其总体沉积特征为:河道频繁分支与,育各种沉积构造及生物遗迹化石。

Abstract : Wollemia nobilis is a monotypic genus in Araucariaceae and one of the oldest living fossil plants in the earth.

摘要 ： 瓦勒迈松是南洋杉科单型属植物，是目前地球上最古老的“活化石”植物之一。

Collects the amateur Donovan nine range estimates after the cultural relic to recognize, Mr.Chen picks two the fossil is the very valuable zoolite.

经文物收藏爱好者唐文玖目测认定，陈先生捡到的两块“化石”是很有价值的动物化石。

Rosenberg, a paleoanthropologist at the University of Delaware, specializes in pelvic morphology and has studied hominid fossils from Europe, Israel, China and South Africa.

罗森柏格是古人类学家，任教于美国德拉瓦大学，专长是骨盆形态，研究过欧洲、以色列、中国、南非出土的人科化石。

Darwin expected species to change slowly, but not at the same rate – some organisms such as Lingula were unchanged since the earliest fossils.

达尔文认为物种变化是缓慢的，但不是以同样的速度变化--一些如海豆芽一样的生物从最早的化石以来未生改变。

The geologist found many uncovered fossils in the valley.

在那山谷里,地质学家现了许多裸露的化石。

Dendrochronology A method of archaeological dating by the ANNUAL RINGS of tree, used when the lifespans of living and fossil trees in an area overlap.

在一定的区域内当生活树木以及化石树木的寿命有重叠，通过树木的年轮来推测考古学年代的方法。

Biorefinery is a new industrial mode substituting renewable biomass for unrenewable fossil resource to produce bioenergy or chemicals and securing the sustainable development of social economics.

生物炼制是以可再生生物质资源为原料,生产能源与化工产品的新兴工业模式。

From 2003 to 2004, we collected a large amount of Nautiloid and Graptolite fossils in upper metamorphic formations of Mayigangri area and determined the age to be middle and Late Ordovician-Silurian.

在羌塘南部地区现有可靠化石依据的早古生代地层存在尚属首次。