六级翻译预测：

交通拥堵是世界各国普遍面临的问题。近年来，我国城市化水平空前加快，大中城市交通拥堵问题尤其突出，交通阻塞已由局部向大范围蔓延。这不仅影响了城市生活的效率和质量，而且带来了环境污染、能源紧张等一系列经济社会问题，严重制约了城市的发展。要想解决这一问题，良好的公共交通是必不可少的。实行低票价政策，是实现公交优先的基本保证。从长远来看，则要大力发展轨道交通(rail transportation),降低路面拥堵。

翻译范文：

Traffic jam has been a problem shared by all countries around the world.In recent years,the urbanization of China reaches an unprecedented level,which leads to especially prominent traffic jam in large and medium-sized cities.The problem of traffic jam has extended from part to a wide range.Traffic jam not only affects the efficiency and quality of uiban life,but also causes a series of economic and social problems like environmental pollution and energy deficiency,which greatly restricts the development of cities.To solve the problem,well-organized public transportation is indispensable.Low ticket price is the basic guarantee of priority of public transportation.In the long term,we must vigorously develop rail transportation to lessen traffic jam.

翻译详解：

1.世界各国普遍面临的问题:译为a problem shared by all countries around the world。“普遍面临的”在此处译为shared by,即“为…所共有的”，也可以用commonly faced by表达。

2.尤其突出:可译为especially prominent或particularly prominent。其中prominent意为“突出的，显著的”。

3.由局部向大范围蔓延:可译为has extended from part to a wide range。

4.必不可少:可译为indispensable或necessary,意为“必要的，必然的”。

5.公交优先:可译为priority of public transportation。

6.从长远来看:可译为in the long term,也可译为in the long run或over the long range。