Imagine 144 quadrillion tiny robotic arms, each constructing physical objects one atom at a time, with a combined output of about one kilogram per hour.

• 想象一下，144quadrillion(百万的四次方)个小型机器手，每个每秒可以制作一个原子那么重的东西，一个小时后总共能生产出1公斤的东西来。