But this is a state of art artificial leg.

但这是一条最先进假肢。

But in terms of motivation since, is the fact that what defines sort of a high-performance computer or supercomputer such a moving target where state of art today is yesterday's news three years from now?

但从动角度来看，高性能计或超级计定义标准是否此多变，以至于顶尖技术在三年后就成了昨日黄花？

This is a $1 trillion project and they're estimating that it's going to cost even more because all of these technologies still have to be developed and they're really trying to get the state of art for everything.

这是一个价值1万亿美元项目，他们估计成本还会更高，因为所有这些技术仍需开发，而且他们确实在努力为每项技术达到最先进水平。