I think we will see a similar story with 3D printing, as it grows from a novelty into something useful and disruptive – and sufficiently cheap and widespread to be used for (relatively) frivolous endeavors as well. We will print not just children’s playthings, but also human prostheses – bones and even lungs and livers – and ultimately much machinery, including new 3D printers.
我认为3D打印也会走这个路子——它已经从天方夜谭变成了有利有弊的现实——而且足够廉价和普及，可以用来处理一些（相对）琐碎活儿。我们可以打印儿童的玩具，也可以打印假体——骨头甚至肝和肺——最终还可以打印更复杂的机器，包括新的3D打印机。