the population is booming 人口爆炸
restrict the development of 限制的发展
lower the efficiency of 降低的效率
stem from 某事由导致
suffer from 遭受
is a threat to 对构成威胁
have detrimental influence upon 对产生有害的影响
cope with 解决,处理
take measures to 采取措施
There is a definite link between A and B
A和B之间有密切的联系
is increasingly severe 越来越严重
is monotonous 单调的
create psychological problems 产生心理问题
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