Question

跪求翻译。。。

Anyhow, countries around the world are in an urgent need of sincere, vigorous and unified efforts to seek a fundamental solution to the problems caused by the global financial crisis, in order to enhance or consolidate the momentum for global economic recovery.
Such ardent expectations for the G20 summit are not without reason. The economic recovery or development of varied economic zones is still very uneven. For a period of time, the fiscal imbalance in some member nations of the Euro zone has not yet been off the hook. In the face of financial crisis, countries have opted to increase internal and external consume demand in a bid to actively create more job opportunities. Of late, a certain power has made a decision to print more dollars to stimulate exports instead of increasing labor efficiency and technological innovation to sharpen its competitive edge. And the entire international community has questioned this short-sighted move.

Answer 1

The other important observation we need to make about spiral galaxies is that galaxies do not rotate rigidly (with a constant angular velocity), but to a good approximation each region rotates with the same tangential velocity.
我们的另一个关于星系的重要发现是星系并不是以固定的角速度旋转，而在很大程度上是每一个区域以相同的线速度旋转。
The properties of random self-propagating star formation and constant tangential velocity are incorporated into GalaxyApp as follows.
这些关于随机扩散的造星区域以及恒定线速度的性质，用以下的方法由GalaxyApp实现。
Imagine dividing a galaxy into concentric rings which are divided into cells of equal size (see Figure 19.1).
想象一下把星系分解成多个同心圆环，每个圆环再分解成多个相同大小的单元（就像硬盘的扇区一样 译注）（图 19.1）。
Initially, a small number of cells are activated.
最初，少量的单元被激活。
Each cell corresponds to a region of space that is the size of a giant molecular cloud and moves with the same tangential velocity v.
每一个单元对应于一个大小相当于巨型分子云（？）的空间区域，并以相同的线速度v旋转。
The angular velocity is given by , where r is the distance of the ring from the center of the galaxy.
角速度由r，圆环到星系中心的距离来决定。
At each time step, the active cells activate neighboring cells with probability p and then became inactive.
Then the rings are rotated, and the process is repeated again in the next time step.
在每一个时刻，活动的单元以p的概率激发周围的单元，接着停止活动，然后圆环旋转。这样的过程不断在每一个时刻重复。
At each time step, cells that have been active within the last 15time steps are displayed as filled boxes, with the size of each box inversely proportional to the time since the cell became active.
在每一个时刻，在之前15个周期内曾被激活的单元以实心方块表示，方块的面积与距离上次激活所过的时间成反比。
More details of the simulation are shown in Figure 19.1 and in the program. A typical galaxy generated by GalaxyApp is shown in Figure 19.2.
更多关于模拟的细节在图19.1以及软件里可以找到。一个典型的GalaxyApp生成的星系如图19.2所示。
Our brief discussion of galaxies is not meant to convince you that the mechanism proposed by Schulman and Seiden is correct.
我们对于星系的简要讨论的目的并不是在于说服您认为Schulman和Seiden提出的动力学机制是正确的。
Rather our purpose is to show how an alternative point of view can suggest new approaches in different fields.
The images produced by computer simulations of the galaxy model show unanticipated features and have been the impetus of r further studies by astrophysicists and astronomers.
相对的，我们是为了显示不同的观点如何在不同的领域里发挥作用，提供新的方法和手段。电脑星系模拟器生成的图像显示出令人意外的性质和特征，推动天体物理学和天文学在这方面的进一步研究。

Answer 2

总之，世界各国都迫切需要真诚，积极的和统一的努力来寻求由金融危机等全球性问题所造成的问题的根本的解决之道，以提高或巩固金融复苏的势头。
20国集团首脑会议的这种殷切期望不是没有道理。经济复苏或不同的经济区的发展仍然很不平衡。在一段时间内，一些欧元区成员国的财政失衡尚未摆脱困境。在金融危机面前，各国都选择了增加内部和外部的消耗，企图积极满足创造更多就业机会的需求。近来，有权力部门已作出决定，印刷更多的美元来刺激，而不是提高劳动效率和技术创新的出口来提升竞争力。整个国际社会也对此种短视的做法提出质疑。

Answer 3