Its population is rapidly aging, which looms as a major problem over the next 30 years.

人口也正在迅速老龄化，这个问题在以后30年内将越来越突出。

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Owing to the over population in urban areas and the lack of employment opportunity, the crime rate is also a huge problem we are faced with.

由于城市地区人口过多和就业机会不足，犯罪率也是我们面临的一个巨大问题。

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A third of the population of the UK and over 40percent in the US regularly sleep less than five hours a night, so itis not a trivial problem.

三分之一的英国人以及超过40%的美国人每晚的睡眠时间常常达不到五个小时，所以这个问题不可小视。

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