useful

“for the robot to navigate the real world and do useful things”

应对现实世界， 并在无明确指示的前提下做有用的事情，

“patents are mostly useful in in a”

所以专利主要在

“Having lived through it, I can now say this to you with a bit more certainty than when death was a useful but purely intellectual concept: No one wants to die.”

既然亲身经历过，我现在能比当初将死亡仅仅视为一个有用的纯理论概念时，更笃定地对你们说：没人想死。