近年来

The study results showed that planting aquatic macrophytes could purify Beijing Zoo eutrophy for water flows.

近年来，北京动物园的水体出现严重的富营养化问题，为了净化水环境，本课题采用了水生植物净化水体的生态工程方法进行了研究。

The company uses the advanced output controllable technology, with the face milling material set the suitable miller, change the traditional surface contact into line contact, make the output granularity evener, high product, widely used in chemical industry, metallurgy, glassed industry, and the high rquirement of the evenness for milling after milling, sand making of building sand in recent years.

公司采用先进的可控进出料技术，结合实际的研磨物料应配用合适的研磨体，以传统的面接触改为线接触，使出料粒度更为均匀，产量更高，广泛使用于耐材、化工、冶金、玻璃等行业对磨后成品均匀度要求比较高的研磨作业，近年来还用于建筑用砂的制砂行业等。

In recent years, thanks to the ever-growing economy of China, more and more Chinese companies are doing transnational business.

近年来，随着中国社会经济的不断发展，越来越多的中国企业也走上了跨国经营的道路。

In recent years, the development of symbolic computation accelerates the research of nonlinear evolution equation greatly.

近年来，符号计算的蓬勃发展，极大地推动了非线性演化方程的研究。

Concept lattice is recently fast developed as a tool for data analysis and rule exaction.

概念格是近年来获得飞速发展的数据分析的有力工具。

In recent years, rapid growth of the domestic excavator sales for two main reasons.

近年来国内挖掘机销量高速增长主要有两个原因。

It had been consider act as excipient for many years, but it was proved that Tween 80 had some pharmacological react and linked with ADRs for the past few years.

过去认为吐温80在制剂中只起到赋形剂的作用，但随着近年来药理学研究的深入，人们认识到吐温80是具有一定生物和药理活性的物质，并与药物临床上出现的不良反应(advers effects，ADRs)相关。

Recently Wang and Xiao discussed the excitation state energy of polaron in polyatomic crystals for the first time.

近年来国内外对多原子极性晶体中磁极化子性质的研究十分活跃，Zorkani等采用变分法计算了束缚磁极化子的基态能量，Kandemir等采用束缚朗道态讨论了二维大磁极化子的基态和第一激发态能量，国内一些学者采用微扰法和新颖算符法讨论了多原子极性晶体中表面和体磁极化子的性质。

Two-photon excitation provides potential application in the detection of single biomolecules and medical diagnosis.

前言：近年来，在生物医学研究领域中，一种独具三维处理能力和极高分辨本领的技术———双光子技术正悄然显示出其变革性的应用潜力。

A kind of polyphase brushless exciter which has better property came into the world in recent years.

近年来一种性能较为优越的新型多相无刷励磁机问世，有关学者已对其运行状况进行了仿真和实验分析。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。