[求助]请教一句原文翻译

jessica_cxy

The amount of time it takes for most of a worker's occupational knowledge and skills to become obsolete has been declining because of the introduction of advanced manufacturing technology(AMT). Given the rate at which AMT is currently being introduced in manufacturing, the average worker's old skills become obsolete and new skills are required within as little as five years.  原文第一句话“是指一个工人的职业知识和技能变得陈旧的时间下降了吗？” 怎么总觉得怪怪的？