近年来

However, due to criminal activities perpetrated by certain individuals operating in the shadows of the underworld, our country's image has been tarnished. These activities have also detrimentally affected law abiding citizens with respect to their lives and personal estates.

但是，近年来随着社会经济的转型和体制改革，极少数犯罪分子也乘隙而入，非凡是具有黑社会性质的组织的犯罪活动的出现，严重侵害我国的政治、经济秩序，损害广大人民群众的合法权益，甚至人身安全。

However, due to criminal activities perpetrated by certain individuals operating in the shadows of the underworld, our countrys image has been tarnished. These activities have also detrimentally affected law abiding citizens with respect to their lives and personal estates.

但是，近年来随着社会经济的转型和体制改革，极少数犯罪分子也乘隙而入，特别是具有黑社会性质的组织的犯罪活动的出现，严重侵害我国的政治、经济秩序，损害广大人民群众的合法权益，甚至人身安全。

However, due to criminal activities perpetrated by certain individuals operating in the shadows of the under-world, our country's image has been tarnished. These activities have also detrimentally affected law abiding citizens with respect to their lives and personal estates.

但是，近年来随着社会经济的转型和体制的改革，极少数犯罪分子乘隙而入，特别是黑社会犯罪活动的出现，严重侵害我国的政治、经济秩序，损害广大人民群众的合法权益，甚至人身安全，所以研究具有特殊的必要性。

It has been increasingly awared that, however, such face-lift can improve nothing but devalue the city.

近年来，越来越多的人意识到，这是对城市"含金量"的破坏而不是增加。

This is an introduction of the new progress of the theory and research in life-span developmental psychology.

毕生发展心理学是近年来比较活跃的心理学研究领域。

In recent years, he has been seriously, carefully and devoutly studied and his poetic art has been explored from all aspects as well.

近年来诗界对他进行了严肃、认真、虔诚的研究，从多方面考察了他的诗歌艺术。

The dexterous robots recently exhibited in Japan have attracted people' s admiration and esteem around the world.

日本近年来展出的各式动作灵巧的人型机器人，引来世界各国的赞赏与重视，纷纷投入相关的研究与开发。

In recent years aromatic diamine derivatives with good photoluminescent and hole transporting properties have been widely used in organic electroluminescence devices.

芳香多胺系化合物不仅是重要的有机染料，而且具有良好的光稳定性和极好的传输性能，近年来已引起研究者的兴趣和关注。

Diaspora has become an important part of the studies of ethnic literature.

离散是近年来族裔文学研究的一个重要内容。

SOD is a severe forest disease that has caused tens of thousands of widespread dieback of oaks and tanoaks, and infected numerous of other plants species in North America and Europe . Many countries give high attention such as Canada , Australia , New Zealand , members of Europe Union, South Korea, China and the United States , and take strict precaution and compulsive measures against its introduction and diffuse respectively.

SOD是近年来新发现的重要栎树病害，在北美，欧洲等地爆发流行，造成成千上万的栎树，石栎枯死，以及侵染很多的其它植物，危害日益严重，引起加拿大、澳大利亚、新西兰、欧盟、韩国、中国以及美国当地有关政府的高度关注，纷纷采取措施严防其传人、扩散。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。