这项研究自1961年以来一直在开展，已经取得了大量的积极成果。
This research has been in progress since 1961 and has yielded a great number of positive results.
第三，积极开展能源合作，充实两国关系内涵。
Third, to actively develop energy cooperation and enrich connotation of bilateral relations.
在受感染地区正在开展积极监测。
Active surveillance in the affected areas is being carried out.
应用推荐