地质时期

At various times in the geological past, many species have become extinct

在过去不同的地质时期，许多的物种因为自然作用而非人类行为而灭绝。

At various times in the geological past, many species have become

在过去不同的地质时期，很多物种的灭绝都是自然因素造成，而并非人类行为。

Of or relating to geologic periods that precede the appearance of ''.

无生的''。'生命'。''出现之前的地质时期的或与''。

It is above-reality because it covers a huge timespan, though not huge enough to exceed a geological era, for example, the current Fourth Glacial Period we're in. And it is far-fetched because it covers every aspect of human life and every corner of the earth (even the no man's land in the Antarctic ice cap).

说它是超现实，因为在时间上的跨度很大（当然还远没有跨越到地质时期，如第四纪以来的冰川期变化），说它超能力，是因为他波及到了当今世界的各个层面、每个角落（甚至是无人居住的北极冰盖）。

We will also explore topics like sediment transport and deposition in modern sedimentary environments, burial and lithification, survey of major sedimentary rock types, stratigraphic relationships of sedimentary basins, and evolution of sedimentary processes through geologic time.

我们也将会探讨以下题目，例如沉积物搬运和现代沉积环境中的沉积作用，埋藏和石化作用，观测主要的沉积岩类型，沉积盆地中地层的关系，和地质时期沉积过程的演变。

The paleo structural contour map restored by concept of "balance in geology" might be more reasonable to depict the 3 D structural geometry in the geological epochs than the map compiled by utilizing the thickness of relict strata.

运用"地质平衡"概念编制的古构造等高线图比传统的只用地层残余厚度编制的古构造等高线图能更合理地反映地质时期的盆地古构造三维几何特征。

It is proved that the magmatic mixing occurred in a special geological time and setting.

论证了发生于这一特殊地质时期和地质背景下的岩浆混合作用。

Mandula area is situated in junction belt between Siberia and North China plates in Damaoqi, Inner Mongolia 1∶50000 regional investigation can recognize many traces of plate action recently years Such as tectonic melange belts, ocean crust remant fragments, island are volcanic and are-rear basin sedimont act They recorded a whole precess or plate action the area from extension, convergence to collision act from Carboniferous to Permian period This result has offered rich, reliable of geological info...

内蒙古达茂旗满都拉地区位于西伯利亚板块和华北板块的接合带。近年来的1∶ 5万区调识别出本区存在着诸多板块活动遗迹，如构造混杂带、洋壳残片、岛弧火山岩、弧后盆地沉积等，记录了在石炭纪至二叠纪这段地质时期内本区从拉张、收敛到碰撞等板块活动的全过程。这一成果，为研究内蒙古北部地槽区的板块活动历史提供了丰富而可靠的地质资料

, 5. 0±0.4 ‰. They are different obviously from those of fossil brachiopods in other paleozoic periods and modern shells.

因此无论是δ〓O，还是δ〓C都与古生代其它地质时期以及现代腕足生物壳体存在很大差别，表明地质历史时期碳酸盐岩的原始氧、碳同位素组成并不是稳定不变的。

Since Later Archaeozoic era (270 hundred million years old), a great number of geologic relics with unique features come into being in the long period of geologic history.

这些地质遗迹集典型性、稀有性、观赏性于一体，对研究东南沿海各地质时期的地质作用、开展地质旅游、普及地球科学知识都具有重要的作用。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。