污染已经成为一个严重问题，不仅对环境有害，对人类也有害。
Pollution has become a serious problem, which does harm not only to environment but also to human beings.
美国是一个严重问题繁多的国家。
所以，这已经成为一个严重问题。
然而，这里有一个严重问题。
压力是当今世界的一个严重问题。
从许多观点来看它都是一个严重问题。
故意毁坏财物的的行为是市内学校的一个严重问题。
交通事故是由汽车造成的另一个严重问题。
The traffic accident is another serious problem caused by cars.
信用缺失是我国社会经济中的一个严重问题。
再植障碍是影响果树持续生产的一个严重问题。
Replant problem is a very serious problem for many fruit tree's production.
毫无疑问，空气污染是全世界的一个严重问题。
There is no doubt that air pollution is a serious problem in the world.
毫无疑问，失眠是我国中学生的一个严重问题。
There is no doubt that sleepless is a serious problem among the high school students of our country.
而且，还有另一个严重问题：几乎完全忽视了预防。
And there is another serious problem: an almost total neglect of prevention.
再植病害是困扰很多种作物生产的一个严重问题。
Replant disease is a very serious problem for many crop's production.
虚假会计信息已成为困扰有关各方的一个严重问题。
The Reason and Tactics of the Lack of Truthfulness of Accounting Information.
污染已经成为一定时期内时间范围内的一个严重问题。
Pollution has been a serious problem for a certain time around the world.
即使7500亿欧元也无法解决以上任何一个严重问题。
Those are the hard questions. Even 750 billion euros won't get close to answering any of them.
故意毁坏财物的的行为是市内学校的一个严重问题。 。
这个创意意在于引起人们对一个严重问题的关注，并且它达成了目的。
THE initiative was designed to draw attention to a serious issue and it achieved its goal.
油气井的出砂已经成为困扰疏松油藏生产的一个严重问题。
Sand production in oil and gas wells has become a serious problem for unconsolidated reservoir production.
货币信用制度危机激化及高物价、高利率是一个严重问题。
The sharpening crisis confronting the monetary credit system together with soaring prices and high interest rates pose a grave problem.
这些自以往就贫困的街区，存在一个严重问题，就是营养不良。
Among the many problems facing these historically impoverished neighborhoods is that of malnutrition.
人口过剩被认为是一个严重问题，是大部分环境问题的根源。
Overcrowding is considered as a serious problem, one that is that at root of most environmental problems.
如何打破作物产量徘徊的局面是应找到答案的一个严重问题。
How to break crop yield stagnation is a serious question warranting an explanation.
众所周知，垃圾邮件问题已经是当今网络世界的一个严重问题。
As we all know, spams have been a very serious issue with Internet.
从称之为全球变暖这一现象就可预期，热天气将是未来的一个严重问题。
As can be expected with something called global warming, heat is going to be a serious problem in the future.
今天，对于我们的地球和我们本身来说，污染已经变成了一个严重问题。
Today, pollution has become a serious problem to our earth and us.
今天，对于我们的地球和我们本身来说，污染已经变成了一个严重问题。
Today, pollution has become a serious problem to our earth and us.
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