Over these years, the study on tyrosinase inhibitors has been a major concern of domestic and international academics. So, the study of screening new naturally tyrosinase inhibitors would provide a theoretical basement for the medical cosmetology, food industry and agriculture resist insects fields.

Although over these years there has been an increase in the number of railway personnel, and in rolling stock, track and other equipment, yet because centralized and unified leadership has been weakened, railway transport has consistently failed to improve.

这些年铁路职工和机车、车辆、线路等装备都有增加，可是由于削弱了集中统一领导，铁路运输总是上不去。

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Over these years it has always adhered to accelerate the development as the theme and to enlarge the sales volume as the main assignment. It advances "tobacco quality" energetically and makes sales gross and tax benefit expand.

广西区烟草公司成立于1983年，这几年始终坚持以加快发展为主题、以扩大总量为重要战略任务，大力推进卷烟上水平，实现卷烟销售总量扩大，税利持续高速增长。

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Over these years, our government attaches great importance to drug safety issues. In order to establish and improve the system of drug safety and security, our government took many measures and made great efforts and also achieved some success.

多年来我国政府高度重视药品安全问题，为建立健全完善的药品安全与保障体系进行了一系列探索与努力，取得了一定成效。

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This paper holds that the differences between graduate number and position number, knowledge structure and market demand, account for the present employment status by analyzing the employment status of teacher-oriented English graduates over these years.

从近年来师范类英语专业毕业生就业现状来看，毕业生数量与用人岗位的差距、毕业生知识结构及市场需求是造成这种就业现状的成因。

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This article entirely introduces the marked economic benefits and social benefits of the technology over these years, also discusses the instant requirements of recent years from deep water well and geothermal well drilling contractors.

就多年来所取得的显著经济效益及社会效益进行了全面介绍，并对近年来深水井、地热井施工单位对此项技术的迫切需求加以论述。

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Over these years, we have tried every different approach to improve the utilization of roughage, and the major methods of measure simple concentrated in the areas of feed processing and modulation.

多年来，人们曾采用不同的方法试图提高粗饲料的利用率，所采取的措施大多集中在单纯对饲料的加工调制方面。

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Over these years, the more rapidly pace of globalization and modernization made great challenges to the integrity and state of conservation of cultural heritage in the whole world.

近几年来，全球化和现代化的加速发展使各国历史文化遗产的完整性和生存状态受到了严峻的挑战，世界遗产的保护、利用和开发研究渐成学术界的热点。

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The average income of the staff has been increased by 50 percent compared with last year. The price of TVs are twofold down over these years.

职工的收入增加了50%.近几年来，电视机的价格下降了两倍。

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Over these years, researches have been carried out by scholars from home and abroad to figure out effective means to improve the simultaneous interpreting.

在过去的几十年中，中外学者对同声传译展开了一系列研究，试图寻找有效提高同声传译水平的办法。

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Over these years incidentally Descartes theory lingered much much longer in France then they did on this side of the channel.

在英吉利海峡的另一端&法国，笛卡尔的理论还苟延残喘地维系了一段时间。

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When it comes to the issue of terrestrial environment, scientists show increasing concern as it does deteriorate over these years.

当我们谈到地球环境问题的时候，很多的科学家表现出越来越多的担心，因为在这些年中，地球的环境确实恶化了很多。

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Over these years, cumulative growth in US real demand was 39 per cent, while GDP grew by 33 per cent.

1995年至2004年，美国实际需求累计增幅为39%，而GDP累计增长了33%。

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Meanwhile, Ireland, Estonia, Spain and Belgium had good performances over these years.

而爱尔兰、爱沙尼亚、西班牙和比利时在这些年间都有着不错的表现。

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Over these years, increasingly fierce exam-oriented education has spread from elementary school to high school, even kindergarten stage.

这些年，日益激烈的应试教育，已经从中学蔓延到小学，甚至已到了幼儿园阶段。

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Over these years, photovoltaic technology is considered to be the main way to solve the energy crisis and the environment problems.

长期以来，光伏发电技术被认为是解决能源衰竭和环境危机的主要途径。

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Over these years, injection molding and blow molding is the mainly field in plastics processing.

一直以来，注塑和吹塑等工艺为塑料加工领域的主要加工方法。

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Over these years, the importance of the principal as curriculum leaders becomes increasingly visible.

近年来，校长课程领导的重要性日益凸显。

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Over these years incredible things have taken place.

在过去的这些年，美国发生了巨大的变化。

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We should learn some valuable lessons from our experience over these years.

应该吸取这几年的教训。

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By various scholars over these years.

已经被不少的学者在最近几年描绘出。

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