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In Gregory scheme, not only the importance of the moist static energy is taken into account, but also the common difficulty of the moist convective adjustment scheme, the determination of the temperature profile, is obviated. At the same time, it can give the vertical profile of the apparent heat source Q〓 and apparent moisture sink Q〓. Gregory scheme has the clear physical image that includes the cumulus updrafts, cumulus downdrafts,cumulus induced subsidence in the environmental air, entrainment,detrainment and evaporation. In addition, the interaction between the cumulus and the environment is described by one-dimensional bulk model. It is simpler than the Arakawa-Schubert scheme and has no difficult to decide the spectrum of clouds accurately.It is propitious to operational use because of its simple calculation. Finally, Gregory scheme is not only suitable for moist convection of all types, but also for dry convection.

在该方案中，既强调了湿静力能能量的重要性，又回避了给定临界温度廓线的困难，并且还能给出真实的视热源Q1，视水汽汇Q2的垂直廓线；同时Gregory方案又具有很清晰的物理图象—积云中的上升运动，下沉运动，环境中的补偿下沉运动，以及卷入，卷出和蒸发等；此外，Gregory方案用总体云群模式来描述云与环境的相互作用，比型积云参数化方案简单，它避开了型方案中云谱需要精确设置的麻烦问题，计算容易，简便；最后，Gregory方案在湿对流中适用于浅，深，中不同的对流深度，并且也适用于干对流过程。

The infinite deviousness of "the ruling classes" and the immense difficulty of the left's task are a given in these halls. In 2004, Solnit published a much-praised book, Hope in the Dark: the Untold History of People Power, challenging the instinctive pessimism of many leftists.

对会议厅里的这些人来说，"统治阶级"的极度狡诈和左派面临的巨大困难都是上天注定的。2004年，索尔尼特出版了一本倍受赞誉的书《黑暗中的希望：未揭示的人民力量的历史》，该书质疑了许多左派人士的天生悲观主义。

The intraperitonealLD_(50) values in mice of VES and VDPG were 0.16mg/kg and 0.39mg/kg,respectively. The intraperitoneal LD_(50) value in cockroach of VDPG andVES were 2.32μg/g and 1.87μg/g, respectively. After intraperitonealinjection of the venom in mice, the main poisoning symptoms includedlethargy, ataxia, diaphoresis, convulsion, anorexia, shortness of breath,and difficulty to open eyes, etc. Whereas the mice injected withphysiological saline acted normally.

两种粗毒都对小鼠和蜚蠊有较强的毒性，其中毒囊粗毒和电刺激粗毒对小鼠的LD_(50)值分别为0.39mg／kg和0.16mg／kg；毒囊粗毒和电刺激粗毒对蜚蠊的LD_(50)值分别为2.32μg／g和1.87μg／g体重；小鼠经腹腔注射粗毒后，出现无生气、共济失调、排汗、痉挛、食欲减退、呼吸短促、睁眼困难等症状，而注射生理盐水的小鼠活动正常。

Meanwhile, there arise some problems, including short of fund, difficulty in diffluence of employees, rigidity in thinking, problems with market-oriented products, fetter of theories, limitations of system, and potential problems caused by leadership ' s involving in contracting and nude purchase.

其中产生了一些较好的做法，如以技术要素、经营者才能和职务参股配股，职工购股置换身份，采用托管方式防止兼并可能的问题，打破狭隘地区观念引入外来大企业，收购方和被收购方优势互补，改制分步进行，向全国公开选聘管理人员等。

In order to bypass the difficulty of discretizing the boundary r or the Lebesgue discontinuous set Su in the Mumford-Shah model, we use an edge-detector function and a threshold value to induce a thin-belt where the image boundary lie in and displace the length of the boundary by the area of the thin-belt approximatively.

为避免在离散化Mumford-Shah模型中的边界Γ或Lebesgue不连续集S_u的困难，我们借助边界检测算子和门限值，确定图像边界所在的窄带区域，用窄带区域面积近似边界的长度。

I throw out these queries for intelligent readers to answer, who know, at once, how credulous we are, and how sceptical, how soft and how obstinate, how firm for others and how diffident about ourselves: meanwhile, it is certain that our friend William Dobbin, who was personally of so complying a disposition that if his parents had pressed him much, it is probable he would have stepped down into the kitchen and married the cook, and who, to further his own interests, would have found the most insuperable difficulty in walking across the street, found himself as busy and eager in the conduct of George Osborne's affairs, as the most selfish tactician could be in the pursuit of his own.

我问了这许多问题，请聪明的读者们自己回答。你们都知道人性的确是这样的，既肯轻信又爱怀疑，说它软弱它又很顽固，自己打不定主意，为别人做事倒又很有决断。咱们的朋友威廉·都宾本人非常好说话，如果他爹娘逼着他，没准他也会跑进厨房把厨娘娶来做妻子。为他本身利益打算，哪怕叫他过一条街呢，他也会为难得走投无路，可是为乔治·奥斯本办事的时候，反倒热心忙碌，最自私的政客钻营的精神也不过如此。

To overcome this "difficulty",it is necessary to clarify some basic theoretical points ,such as the difference between the value concerned in the theory of labour value with the value in other fields;the materialized part of labour with the active part of labour in the productive elements;the decisive elem...

要突破这一"难关"，就必须首先明晰劳动价值论中的价值与其他领域和学科中的价值，生产要素中的物化劳动部分与活劳动部分，决定生产力的要素与决定价值的要素，马克思的财富观与价值观，以及商品的实物形式与活动形式等基本理论界限，从而在研究和探讨的基本理论前提上形成共识。

They are the ignorant youths, their proximity cautiously, probes opposite party bottom heart, discovers diligently in opposite party moral nature position, that kind of evasiveness, speaks the feeling with difficulty, is the initial love, they fall in love, in a static lake's side bank, looks like under the sunlight the very straight tree to be righteous.

他们是懵懂的少年，他们小心翼翼的接近，试探对方的底心，努力找出在对方心底的位置，那种不可捉摸，难以言说感觉，是最初的爱，他们相爱，在一面静湖的侧畔，象阳光下笔直的树般理直气壮。

They are the ignorant youths, the ir proximity cautiously, probes opposite party bottom heart, discovers diligently in opposite party moral nature position, that kind of evasiveness, speaks the feeling with difficulty, is the initial love, they fall in love, in a static lake's side bank, looks like under the sunlight the very straight tree to be righteous.

他们是懵懂的少年，他们小心翼翼的接近，试探对方的底心，努力找出在对方心底的位置，那种不可捉摸，难以言说感觉，是最初的爱，他们相爱，在一面静湖的侧畔，象阳光下笔直的树般理直气壮。

Owing to the complicacy of the study in public sector economics, because of the multi-targets of government's administration, and because of the difficulty in measuring the public goods supplied by the government, public sector economics has always been thought as a challenging filiation in economics.

由于公共部门经济学研究中所面对的因政府施政目标的多元化以及政府所提供公共产品的难以量度性所带来的复杂性，向来被认为是经济学体系中一个较具挑战性的分支。

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。