1.
The sudden appearance of abundant and varied fossils makes a worldwide time line for dividing the geological time scale into two main parts.
丰富多样的化石的突然出现为在世界范围内把地质年代划分为两大主要部份提供了时间界限。
2.
In the geological time scale, there are five eras, the archeozoic which means "beginning life", the Proterozoic which means "fore life",
在地质年代表中共划分为5个代，太古代的意思是 “生命的开始”。元古代意即“生命之前”，
3.
The longest division of geologic time, made up of one or more periods.
纪元地质年代最长的划分，由一个或多个阶段组成
4.
Life often seems to be marked off into different periods: schooldays, marriage, old age, for example.
人生似乎往往可划分成几个不同的阶段同，如：学生时代、姻时期、年。
5.
THE STRATIGRAPHICAL AGES,DIVISION AND CORRELATION OF THE EARLY PRECAMBRIAN IN THE TAIHANGWUTAI AREA,THE YANSHAN AREA AND THE EASTERN SECTOR OF THE YINSHAN MOUNTAINS
太行五台区、燕山区、阴山东段的早前寒武纪地层年代、划分及对比
6.
Age and Stratigraphical Division of Diluvium-Depositional Sub-Facies of Debris-Flow in Quaternary in Xiaojiang Drainage, Yunnan
云南小江流域第四纪洪积—泥石流沉积的年代与地层划分
7.
CLASSIFICATION OF CHRONOSTRATIGRAPHIC AND THE BIOTA FROM THE END OF DEVONIAN PERIOD TO EARLY CARBONIFEROUS EPOCH OF NORTHERN GUANGXI
桂北泥盆纪末至早石炭世生物群及年代地层划分
8.
Quaternary Lithostratigraphy and Chronostratigraphy Division and Correlation in Kunming Basin;
昆明盆地第四纪岩石地层与年代地层划分与对比
9.
Comparative Analysis of International and Domestic Study of Regional Planning since 1990 s;
20世纪90年代以来中外区域规划研究的对比分析
10.
Study on Intrusive Rocks Forming Period and Stages Division in Ludong Area
鲁东地区侵入岩形成时代和期次划分——锆石SHRIMP U-Pb年龄的证据
11.
A Study of the British Youth Training Scheme in 1980s;
20世纪80年代英国青年培训计划研究
12.
Lithostratigraphic division and correlation of the Early Precambrian （Archean－Paleoproterozoic） in North China and age assignment of the lithostratigraphic units
华北早前寒武纪(太古宙-古元古代)岩石地层单位划分、对比及地质年代属性讨论
13.
In another, the government distributed surplus cheese, butter and nonfat dry milk to the poor during much of the 1980s.
按照另一项计划，在８０年代的大部分日子里政府把剩余奶酪、黄油和脱脂奶粉分配给穷人。
14.
Task Group on Modernization of Children and Youth Centres
儿童及青年中心现代化计划专责小组
15.
BRIEF INTRODUCTION TO THE PROGRESS IN ILP
90年代的国际岩石圈计划研究进展
16.
the country's ambitious plan for an economic take-off in the 1990's
国家关于90年代经济腾飞的宏伟计划
17.
The Research on the Western European Strategic Spatial Planning (SSP) in the 1990s;
西欧1990年代空间战略性规划（SSP）研究
18.
The Ideological Trend towards a Planned Economy in Chinese Intellectual Circles, 1930s-1940s;
30—40年代中国思想界的“计划经济”思潮