Sometimes I just feel like quitting, but then I think about all the people I’d be letting down.
The robot is a device that is designed to do the work of a human being, but it is not a human being.
机器人是一种被设计用来完成人类工作的设备，但它并不是人类。
实现明天的唯一限制是我们今天的疑虑。