棘手

The frontogenesis process involves in the interactions among the systems of multiple scales. Since the hardness of the nonlinear problem, it is difficult to study frontogenesis analytically. The introduction of the effects of orography, friction and diabatic processes generally makes impossible the analytical resolution of the problem and leads to the use of numerical models. Primitive equations are numerical integrated together with a detailed description of physical processes. The circulation obtained is then used to diagnose and test theoretical mechanisms. It should be noted, however, that a fully description of frontogenesis in explicitly resolving the of large-, meso- and micro-scale flow in the same framework is not yet possible because of the excessive computer capacity and the time required. In order to deal with the problem, the action of large-scale background has been simplified and taken into consideration through the addition of the forcing into the nonhydrostatic cloud model.

大气锋生是一种多尺度相互作用的过程，理论研究遇到非线性的困难，在考虑地形、摩擦、非绝热等物理过程之后，解析研究更加棘手，通过数值模拟搞清其中的物理机制是重要的研究手段，但是把大、中、小尺度甚至微尺度的系统及其相互作用过程在一个模式里同时模拟好仍然受计算机速度和容量的限制，本论文在非静力云模式中通过强迫方式加入大尺度变形场的作用，在考虑到大尺度背景作用的同时，可以充分利用云模式所提供的丰富物理过程、非静力和高分辨率特点，开展一些过去较难进行的研究工作。

But because of using just a fumigant in a long time and working out of line, the fumigant do little effect to pests in recent years.

但目前，绝大多数熏蒸方法都存在磷化氢发生工艺不完善，熏蒸有毒残渣难以处理等棘手的问题。

WHEN Umaru Yar'Adua took his presidential oath on May 29th, he promised to be a "servant leader" and to move speedily towards solving Nigeria's most pressing problems: insurgency and gangsterism in the oil-producing Niger Delta region, an appallingly erratic supply of electricity, and massive endemic corruption.

当奥马鲁·亚拉杜瓦（Umaru Yar'Adua）于五月二十九日就任总统宣誓时，他承诺要成为一位"为人民服务的领袖"，并且会快速地肃清尼日利亚最棘手的问题：叛乱、在产油地尼日尔三角洲的犯罪行为、供电的过分不足与大规模的地方腐败恶习。

The office was given a $48 million budget, the right to garnishee bank accounts, seize lottery winnings, suspend driver's licences, use private collection agencies for the worst cases and take defaulting parents to court.

该机构每年的预算开支为4800万，并有权扣押银行存款，冻结彩票奖金，吊销驾驶执照，让私人讨债公司来处理棘手案例，以及将拖欠赡养费的父母告上法庭。

From analysis of the differences between the theory of nationalities and regional economics, my thesis abstracts the general reason and finance policy factor.

民族地区经济发展的相对落后，不仅是我国经济发展的一个基本现实，也是我国经济发展的一个十分棘手的突出难点。

In many ways the germination process is the most tricky and can be the most frustrating.

在许多方面的发芽过程是最棘手的，可以是最令人沮丧。

I hope that one day you make me your friends.it is good to find sb here to talk with when you feel homesick.really sometimes we people who are far form hometown will take homesickness or sth just like that.befor leaving home almost all of us have some big and fantastic dreams to realise.at that time we got enough inspiration and passion ,there is no difficulty in our eyes,it seems all the things would go well ,never worry about sth tough would happen to us.so what a kind of great life it is!

希望有一天你可以把我当作是你的朋友。当你想家时，在这里有一个人与你谈心是非常舒服的事情。的确，我们这些远离家乡的人会想家。离开家之前我们中几乎所有的人都有一些美好的梦想希望能实现。那时我们充满灵感和热情。在我们的眼中任何事情都显得如此简单。一切都会很一帆风顺，从不担心会发生什么棘手的事情。那是多么美妙的生活啊。

The spokesmen in White house always need to answer some Gordian knot.

白宫发言人常常要回答一些很棘手的问题。

Rural issue is at present economy grows our country most one of a Gordian knots.

农村问题是我国目前经济发展最棘手的问题之一。

These activities that use gregarious medium caused a few a Gordian knots.

这些利用社交媒体的活动引发了一些棘手的问题。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！