Observation on the generation of Callitettix versicolor Fabricius;
稻赤斑黑沫蝉发生世代的观察研究
Generations of the Sheep Bot Fly, Oestrus ovis in the Southern Border Area of Zhungeer Basin
准噶尔盆地南缘区域羊鼻蝇的发生世代调查
It takes place in that city during the 1920s.
故事发生在20世纪20年代的那个城市，
That happened in the 1980s.
这些发生在20世纪80年代。
How does it take place in the contemporary art world?
当代艺术世界如何发生了这样的事情?
The period of change came during the 1970s.
变化发生在20世纪70年代。
Great changes took place in China in the1990? s.
中国在二十世纪九十年代发生了巨变。
The Leading Role of Modern Biotechnology in the 21st Century;
二十一世纪发展的主角——现代生物技术
EcophilosophyA World View of Sustainable Development Period;
生态哲学——可持续发展时代的世界观
H. rhodope occurs 4 generations a year in Hefei area with overlapped generations.
该虫在合肥地区1年发生4代,有世代重叠现象。
The first generation of beet webworm,Loxostege sticticalis will be seriously outbreak in Northern China in 2009
2009年1代草地螟将为我国发生最重的世代
The Meso Cenozoic basin in the North Qaidam underwent two generations of deformation.
在柴达木北部中、生代盆地发生了二个世代的改造变形。
There was a serious slump in the 1930s.
二十世纪三十年代发生严重的经济衰退。
In the 90s of the century many important events happened.
这个世纪九十年代发生了许多重要事件。
Study on the Production and Development of Sichuan s Tea in 1950 s and 1960 s;
二十世纪五六十年代四川茶叶生产与发展研究
On Ecological Poetry of China 1980s;
20世纪80年代以来中国生态诗歌发展论
Birth and developing of early private industry in 1900s Shenyang;
20世纪初年沈阳市近代私营工业的产生发展
A Progress of Ecological Developmental Psychology Since the 1980s
20世纪80年代以来发展心理学生态化研究进展
The story is a contemporary one; it occurs in the second half of the twentieth century.
这是一个发生在当代的故事--故事发生在20世纪下半叶。