During an infection the number of mites increases rapidly, then drops off leaving infected persons with a relatively stable population.
螨感染人数在急剧增加，感染人数则下降客留下了一个比较稳定的人口。
With aging of the population in worldwide, the prevalence of osteoporosis increases rapidly and it will be a huge financial burden to all the countries.
随着人口的老龄化，骨质疏松症患病率迅速增加，给世界各国带来沉重的经济负担。
Along with the swift development of Chinese economy, Chinese city scale is extended rapidly, city population increases fast.
随着中国经济的迅猛发展，中国的城市规模急剧扩张，城市人口飞速增长。
As human population increases rapidly, human activities cause the increase of tropospheric ozone (O3) which significantly exerts adverse effects on the health of plants, animals and human beings.
由于人口的快速增长，人类活动导致近地层o3浓度不断提高，O3浓度升高将对植物、动物和人体健康产生极大的危害。
As human population increases rapidly, human activities cause the increase of tropospheric ozone (O3) which significantly exerts adverse effects on the health of plants, animals and human beings.
由于人口的快速增长，人类活动导致近地层o3浓度不断提高，O3浓度升高将对植物、动物和人体健康产生极大的危害。
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