求翻译：当人们关注着快速增长的中国人口给社会经济带来的巨大压力时，中国人口的年龄结构也在悄然老化，使我们又面临另一个严峻的挑战：人口老龄化问题。是什么意思？

When people are concerned about the rapid growth of China's population to the enormous social and economic pressures, China's population age structure is also quietly aging, so we faced another challenge: the aging population.

When people are concerned about the rapid growth of China's population to bring socio-economic pressures, the Chinese population in the age structure has also quietly aging, so that we faced another serious challenge: the aging of the population.

When when the people are paying attention to the fast growth Chinese population the huge pressure which the social economy brings for, the Chinese population age structure quietly is also getting older, causes us to face another stern challenge: Population aging question.

When people are watching the fast-growing Chinese population to bring enormous socio-economic pressure, ageing Chinese population age structure are quietly so that we are facing another difficult challenge: an ageing population.

When people are watching the fast-growing Chinese population to bring enormous socio-economic pressure, ageing Chinese population age structure are quietly so that we are facing another difficult challenge: an ageing population.