2014年6月英語四級翻譯練習(xí)：快速老齡化

　　請將下面這段話翻譯成英文：

　　根據(jù)全國老齡工作委員會(the China National Committee On Aging)的數(shù)據(jù)來看，到2053年，中國60歲及以上的老人數(shù)量預(yù)計 會從目前的1.85億一躍變?yōu)?.87億，或者說是占總?cè)丝诘?5%。擴 張的比例是由于壽命的增加和計劃生育政策(family planning policies) 限制大部分城市家庭只生一個孩子?？焖倮淆g化對社會和經(jīng)濟穩(wěn)定造成了嚴(yán)重威脅。

　　參考翻譯：

　　The number of people aged 60 and above in China is expected to jump from the current 185 million to 487 million, or 35 percent of the population, by 2053，according to figures from the China National Committee On Aging. The expanding ratio is due both an increase in life expectancy and by family planning policies that limit most urban families to a single child. Rapid aging poses serious threats to the country’s social and economic stability.