Off goes the robot marching around the microworld.

机器人开始在微观世界行进了。

Instead of just watching the microworld, we as humans can now build technology to shape it, to interact with it, to engineer it.

除了只是观察微观世界，我们人类如今还能创造新技术来构建这一微观世界，与之互动，为之设计。

In fact, for six months, my job was to shoot lasers at tiny cell-sized robots to pilot them around the microworld.

实际上，6 个月来，我的工作就是把激光投射在细胞大小的机器人上，操纵它们在微观世界里的行动。