迄今人类寿命基因研究仍十分艰巨，而随着基因组技术的快速成长以及能对更多的百岁老人进行研究前景一片光明。
So far the search for longevity genes in humans has been extremely difficult, but prospects brighten as genomic technologies become faster and there are more centenarians to study.
一个很大的问题是，由于房价增长而大大增加了这个国家消费者的债务负担，可是当房价下降百分之十以上时会产生什么样的影响。
The bigger question is what effect double-digit house-price declines would have in a country where consumer debts have soared on the back of housing wealth.
而百事公司这一计划就占了09年全年总数的十分之一以上。
Pepsi's scheme alone amounts to over a tenth of the entire 2009 figure.
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