So what you've done is to take a technology, which is available everywhere, make a device, which is extremely cheap, and make it in such a fashion that it is very, very reliable.
所以说，你所做的就是，用一种 在任何地方都能用上的技术 做出一种极为廉价的装置 并且做成这种样子 使它非常非常可靠