mid-sixties

During the time from the end of Qing Dynasty to mid-sixties of the 20th century , the study on Shakespeare 's history plays in China slowly came into being .

从清朝末年到20世纪60年代中期，我国的莎士比亚历史剧研究经历了从无到有的历程。

In this piece of land , from the mid-sixties to late seventies of the twentieth century , the youth had set off large-scale campaign to the countryside .

就在这片土地上，二十世纪六十年代中期至七十年代末，曾掀起大规模的知识青年上山下乡运动。

In the latest research , published in the Journal of the American College of Cardiology , scientists analysed data from eleven different studies - dating back to the mid-Sixties - and pooled the results to get an overall outcome .

科学家在最近分析了十一份不同报告的数据，其中最早的可追溯至上世纪六十电脑，由此得到了一个总结性的研究结果。