Furthermore , as all the world could see , within that four - pound rock from mars were microscopic rodlike objects that seemed to be the fossilized remains of extremely simple bacteria 世所共知,在那四磅重的陨石内部有微小的条形物质,可能是极原始的细菌化石。
Seoul ( afp ) - the world ' s oldest fossilized webbed footprints of birds , believed to be 110 million years old , have been found on a south korean island 韩国科学家们最近在该国一个岛屿上找到了世界上最为古老的蹼状鸟类足迹化石,据悉这些化石距今已有1 . 1亿年之久。
In their place we found intriguing alternations of turquoise - blue , gray and green clays , brown sandstone and fossilized plant matter called lignite 我们发现取而代之的岩层组成十分有趣,其中包括了蓝绿色、灰色、绿色的黏土、棕色的沙岩,以及称做褐煤的植物化石。
Previous studies have looked at the movements of birds , the direct descendents of dinosaurs , and fossilized footprints to judge how tyrannosaurus rex would have moved 以往的研究都是去看恐龙的直接后裔鸟类的行动,还有化石脚印,从而判断出霸王龙暴龙是如何行动。
The ecology of the sea and all water - life is of great concern to sam , as is the question of what will be left to become fossilized from the age we live in 对于山姆来说,海洋生态和所有的水生物都是重要的,例如山姆会担心在我们生活的时代当中会留给后世怎样的化石。
The next year , during paleontological excavations , primitive stone tools came to light , bringing with them the tantalizing possibility that fossilized human remains might eventually follow 第二年,古生物学家在那里发掘出原始石器,让人兴起也许还能找到人类化石的希望。
Indeed , the jack hills zircons ? separated by perhaps thousands of kilometers from their source ? were found embedded in a fossilized gravel bar called the jack hills conglomerate 事实上,在杰克丘发现的锆石,就是深埋在名为杰克丘砾岩的化石砂砾层里,而它们很可能是从几千公里远的地方被带到那里的。
Major support for this view comes from the apparent absence of any intact rocks older than four billion years ? and from the first fossilized signs of life , which are much younger still 支持上述论点的主要有两项观察与推断:找不到40亿年前就生成的完整岩石,而由化石得到最早的生命迹象,也比地球本身年轻许多。
Learner ' s inter - language fossilized some way short of target language competence while the internalized rule system contained rules that are different from those of the target language system 学习者的语际语在未到达目的语言能力时,就发生了僵化,此时其内在化的规则体系与目的语语言体系所包含的规则不尽相同。
Millions of brutal years of burial and resurfacing , akin to repeated pressure cooking , permitted very few fossilized cells to survive in rocks accessible at the earth ' s surface today 在漫长且无情的时间之流中,它们被吞入地底又推升上来,就好像在压力锅内反覆煎熬,使得今日地表的岩石中已很少留有成为化石的细胞了。
set in a rigidly conventional pattern of behavior, habits, or beliefs; "obsolete fossilized ways"; "an ossified bureaucratic system" 同义词:fossilised, ossified,