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First of all, I think the organic materials of unicellular organisms must be produced in some quantity in the environment and quickly buried in the sediment before being destroyed by oxidation.

我认为首先是要有形成一定量单细胞生物有机物质的环境,而这些有机物质在被氧化破坏之前应快速埋藏在沉积物中。

The coarse clastic rock of the braided channel of the fan-delta plain is formed when sedimentary water body is in the salinity stage of active tectonic period, the cotemporaneous cementation is intense and the cementation of the carbonate and sulphate has intense packing action in eogenetic stage of shallow buried.

构造相对活跃期为沉积水体咸化期,主要发育扇三角洲平原亚相的辫状河道粗碎屑岩,同生期胶结作用强,而浅埋藏早成岩阶段碳酸盐和硫酸盐胶结物充填强烈,致使物性进一步变差,并且不利于晚成岩A阶段的溶蚀作用进行。

The study of the depositional structure of ancient crevasses splays by means of sedimentology and paleomagnetism is important for the floodplain. While the research on ancient trees, peats and pollens caused by paleoflood is useful to paleoflood discrimination.

在洪泛平原区,对古溃口扇采用沉积学、地球物理学方法研究其沉积结构,对确定古洪水事件具有积极意义;通过古洪水所产生的埋藏古树、泥炭及沉积物中花粉的研究也有助于对古洪水事件的识别。

By restoring the evolution of embedding we proved that Damintun depression sank heavily in the earlier stage of Eogene system, the fillingmatter in the depression mainly formed in Es4 and Es3stage.

埋藏史的恢复结果证实了大民屯凹陷在下第三系早期就发生强烈的断陷,凹陷内的充填物主要在沙四期和沙三期形成,上第三纪和第四纪凹陷基本处于萎缩阶段。

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推荐网络例句

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。