A historical retrospect and prospect of ecological developmental psychology in the last 50 years 近50年来发展心理学生态化研究的回顾与前瞻
Quantitative effect of human activities on water level change of bosten lake in recent 50 years 近50年来人类活动对博斯腾湖水位影响的量化研究
The changing climate , pointing to agriculture , will have a remarkable influence on the crop producing 结果表明，近50年来，越南气温升高，降水量显著变少。
In the recent 50 years since only a few have been made , was the wellspring of invention drying up 而近50年来只有为数不多的发明，难道发明的源泉已经枯竭了吗？
( 1 ) . there is a trend to become warm in all four seasons in north china during the past fifty years 结果表明： ( 1 )近50年来，华北地区四季都经历了由冷到暖的变化过程。
But the city lost the vision thing about 50 years ago , as it slipped into what appeared to be an inexorable process of decline 但是，近50年来，这座城市却丧失其远见卓识，滑入了一条看似无法逆转的下坡路。
The list was drawn up after experts medical studies published over the past 50 years examining why people are living longer 科学家们对近50年来发表的“长寿”医学研究进行了搜集和整理，最终列出了这十大长寿秘诀。
The list was drawn up after experts trawled medical studies published over the past 50 years examining why people are living longer 科学家们对近50年来发表的“长寿”医学研究进行了搜集和整理，最终列出了这十大长寿秘诀。
( 2 ) in the recent fifty years , precipitation in all seasons and the floods season shows a decrease tendency except that spring precipitation shows a light increase tendency ( 2 )近50年来东北地区各季降水除春季略呈上升趋势外，其他各季以及汛期降水均呈减少趋势。
The results are as follows : the extent of arctic sea - ice has apparent characteristics of interannual , interdecadal variability and decreasing trend during the last 50 years in winter 结果表明：冬季北极海冰面积有明显的年际、年代际变化特点，冬季北极海冰面积变化近50年来有趋势性减少特征。
