Lifeexpectancies throughout the Caribbean and some Central American nations will drop into the 60s by 2010 when they would otherwise have been in the 70s without AIDS.
Requirements, software designs and even test scripts have relatively short lifeexpectancies compared to code.
需求、软件设计，甚至测试脚本与代码比较有相对短的预期寿命。
3
Employers in the rich world have no choice but to learn how to deal with an ageing workforce, as the baby-boom generation gets older and lifeexpectancies increase.