Pollution is one of the most important issues in the world today.
污染问题是当今世界上最重要的问题之一。
Now environmental pollution has become a very serious problem the world is facing today.
现在环境污染已经成为当今世界面临的一个非常严重的问题。
Today pollution is a very serious international problem. Almost everything is polluted in the world.
今天，污染是一个非常严重的国际问题，世界上几乎所有的东西都被污染了。
The air pollution, noise pollution and water pollution exist all over the world.
空气污染，噪音污染和水污染存在于世界上的每一处。
Is there a lot of pollution in the world?
世界上有很多的污染吗？
The world knows that pollution has become a serious problem .
世界人民知道，污染已成了严重问题。
Pollution is really a hot issue in the world.
污染是一个世界性的热门问题。
California's air pollution control program is one of the most effective in the world.
加州的空气污染控制方案是世界上最有效率的方案之一。
Pollution in today's world can be in various kinds.
当今世界的污染有很多种类。
Soil heavy metal pollution is a universal problem in the world.
世界各国土壤均出现不同程度的重金属污染问题。
Enviromental pollution is a very serious problem all over the world.
环境污染问题是世界普遍关注的严重问题。
The soil pollution by petroleum is a common problem in the world.
当今土壤的石油污染是一种较为普遍的现象。
People all over the world are concerned about nuclear pollution.
全世界的人都关心核污染。
The most important question in the world today is pollution.
当今世界最重要的话题就是污染问题。
The environmental pollution has become an important problem that the world has to be faced.
环境污染已成为当今世界所面临的一个重要问题。
All the world knows that pollution has become a serious problem.
全世界的人都知道污染已成了严重问题。
There is no doubt that air pollution is a serious problem in the world.
毫无疑问，空气污染是全世界的一个严重问题。
The most important question in the world today is pollution .
当今世界最重要的话题就是污染问题。
Environmental pollution has been a hot topic in the world.
环境污染已成为当今世界的热门议题。
Environmental pollution has been a hot topic in the world.
环境污染已成为当今世界的热门议题。
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