近几十年来

• Scientists in many countries have been studying and finding better kind of cooling methods in nearly years
  近几十年来，各国科学家都在研究和探索更有效的降温方法。
• The situation has been serious that the land has degraded in the west of liaoning province during recent decades
  辽西地区近几十年来土地退化严重，已成为生态脆弱区。
• In recent several decades , there has come out constant advancements of drill bit technology and lots of achievements
  近几十年来，钻头技术取得了不断进步和累累成果。
• Reinforcement learning , a kind of machine learning algorithm , has receieved much attention in recent ten years
  强化学习是近几十年来迅速发展起来的一类机器学习算法。
• For several decades , researches on chaos in josephson junctions have been the focus of considerable attraction
  近几十年来，对josephson结中混沌的研究引起了广泛的关注。
• Seismic analysis methods for long - span bridges have received much attention during the past several decades
  大跨度桥梁抗震分析方法近几十年来一直是国内外学术界的研究热点。
• As a new subject , paleoparasitology archaeology has rapidly developed during the past decades overseas
  摘要作为一门新兴学科，寄生物考古学近几十年来在国外得到了迅速的发展。
• Asset securitization is the most important financial innovation in international financial field in recent decades
  资产证券化是近几十年来国际金融领域中最重要的一项金融创新。
• Last several decades , the theory and construction of our bridge deep water foundation have been developed rapidly
  近几十年来，我国在桥梁深水基础理论及施工实践上有了很大的发展。
• The people of the united states have been tremendously impressed with all that has been achieved in china in recent decades
  切尼：美国人对于中国近几十年来所取得的成就非常瞩目。