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The nitrogen in fossil fuels is more refractory than sulfur, and microbial approaches for petroleum denitrogenation could be beneficial as the classical hydroprocessing methods are costly and unefficient.

化石燃料中所含的有机氮较有机硫更难以去除，常规的化学脱有机氮技术高压加氢法处理燃油能耗高，处理效果不理想等方面的缺陷使人们思考生物脱氮的可能性。

What is more, the public debt is huge (worth well over 100% of GDP), so the government has little scope to copy others in borrowing for costly stimulus measures. An "anti-crisis" package unveiled by Mr Berlusconi on June 26th was unhelpfully modest: its main provision was a 12-month, 50% tax break on reinvested profits.

此外，国债数目巨大（价值高于全部国民生产总值），因此意政府无法效仿他国采取大规模经济刺激方案。6月26日，贝卢斯科尼先生提出的&抗危机&一揽子计划不值得一提：主要条款为一年内将再投资利润税收减少一半。

Even though it wasat least two sizes too large and more costly than I had anticipated,I talked Mom into buying it.

尽管它至少要大上两码，价格也比我预想的要高很多，我仍说服了母亲买下了它。

Such stories involved long, costly and wearying challenges to political and legal authority.

这样的报道是对政治和法律权威的挑战，且过程漫长，花费高昂，令人疲倦。

Wilk said he has opted for liquidation because litigation to challenge the bank's lien would be costly and time consuming.

威尔克说，他的选择，因为诉讼清算挑战银行的留置权将是昂贵和费时。

Doctor Winkel says antivenom treatment is too costly for many poor people who need it most.

文科医生说，对于那些急需治疗的穷人来说，抗蛇毒血清治疗手段太昂贵了。

Doctor Winkel says antivenom treatment is too costly for many poor people who need it most.

Winkel 博士说对于许多最需要治疗的穷人来说抗蛇毒素治疗太贵了。

This allows us to perform virtual experiments and study processes that are too costly or technically very difficult to study," says Zaman, who also directs the Laboratory for Molecular and Cellular Dynamics."

这使我们能够以虚拟的实验和研究过程来应对一些太过昂贵或技术难度非常大的研究。

Yet lately the attitude of the German superstars at the club has been less than reciprocal. When Bayern lost 3-2 at Wolfsburg in the Bundersliga last September, Oliver Kahn took time out from making some costly goalkeeping errors to lambast Hargreaves.

然而近来，俱乐部德国超级球星们的态度开始产生了变化，去年9月当拜仁在德甲联赛客场3：2输给沃尔夫斯堡时后，奥利弗卡恩抛下自己所犯的重大失误，将矛头指向乖小孩哈格里夫斯。

No doubt the socialisation of most financial intermediation would be costly as regards dynamism and innovation, but if the risk of instability is too great and the cost of instability too high, then that may be a cost worth paying.

有一个存在已久的主张认为，接受存款的私有银行机构根本没有理由存在，因为若没有存款担保和/或由纳税人买单的最后贷款设施的话，这些机构就无法安全存在。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。