例句與造句

1. First occurrence of acanthodian microfossils from the early devonian of lijiang , yunnan , china
   泥盆世棘魚(yú)類(lèi)微體化石的首次報(bào)道
2. The hard coats of spores and pollen grains are preserved better , forming microfossils
   孢子和花粉粒的堅(jiān)硬外殼被完好保留下來(lái)形成微化石。
3. Our oldest fossils date to roughly 3 . 5 billion years ago , and consist of bacteria microfossils
   我們的最舊的化石約會(huì)對(duì)大致3 . 5十億年前,和包括細(xì)菌microfossils 。
4. In the summer of 2003 we began to zero in on one microfossil type whose complex morphological characteristics particularly intrigued us
   2003年夏天，我們開(kāi)始瞄準(zhǔn)一種微化石的類(lèi)型，其復(fù)雜的形態(tài)特徵特別引起我們興趣。
5. Our initial probes suggested that a relatively thin sedimentary layer , which is black in color , would be the most promising for finding a variety of microfossils
   我們的初步探查顯示，有一層黑而薄的沉積，最有希望找到各式各樣的微化石。
6. It's difficult to find microfossils in a sentence. 用microfossils造句挺難的
7. We know from microfossil evidence that living cells existed on earth some 3 . 5 billion years ago , and these bear a striking resemblance to microorganisms we find today in geothermal springs
   從微體化石的證據(jù)顯示，細(xì)胞早于約3 . 5億年前便已存在，它們竟和現(xiàn)時(shí)在溫泉中發(fā)現(xiàn)的微生物十分類(lèi)似。
8. Well - preserved autofluorescence properties show a correlation between acritarchs morphology and the intensity of organic cell walls and two groups of microfossils are distinguished
   這也是我國(guó)首次用化石藻類(lèi)熒光與生物屬性關(guān)系進(jìn)行研究的嘗試，為今后利用熒光進(jìn)行化石藻類(lèi)分選和超微結(jié)構(gòu)研究作了有益的探索。
9. The latest studies show that these rocks are older than the ediacara biota , most likely 580 million to 600 million years old , and thus that the microfossils they contain lived 40 million to 55 million years before the cambrian
   最新研究顯示，此沉積比艾迪卡拉生物群還早，很有可能介于6億到5億8000萬(wàn)年前，也就是說(shuō)，里面微化石的生存年代比寒武紀(jì)還早了4000萬(wàn)到5500萬(wàn)年左右。
10. The origin and evolution of land plants was an important event in the history of earth life and has affected all other lives on the earth and global environment . during the past two decade , the new discoveries of fossil plants microfossils and megafossils from the mid - ordovician through all silurian to the lower devonian improved knowledge of the origin of land plants , provided a time framework of the basal groups for the land plants and the early evolution diversity of vascular plants . three new plant based epochs have been recognized . on the other hand , molecular sequence studies have provided insights into the phylogeny and early branches of land plants . a phylogenetic tree has been established by the joint of a study of comparative morphology and gene sequences . this paper summarizes recent advances and new knowledges , comments on the phylogenetic studies based on the cladistic analysis
    陸生植物的起源和演化是地球生命中的重大事件，它影響到地球上所有的其他生命和全球環(huán)境。在過(guò)去的20年中，從中奧陶世歷經(jīng)整個(gè)志留紀(jì)至早泥盆世的巖層中，化石植物微化石和大化石的新發(fā)現(xiàn)改變了人們對(duì)陸生植物起源的認(rèn)識(shí)，并且為陸生植物和維管植物早期演化分異提供了基部類(lèi)群分化的時(shí)間框架。據(jù)此人們識(shí)別出地史中的3個(gè)陸生植物的時(shí)代：始胚植物時(shí)代始維管植物時(shí)代和真維管植物時(shí)代。