这就是痛苦的特性，它要求被感受到。

Every piece of plastic we produce should have a clear path to being reused or recycled.

Challenges are opportunities in disguise.

You'd say he did it to please the guards. Or maybe it's in order to do a good job with us. And I thought he was just to experience the feeling of a normal person again, even just for a short moment.

控制的挑战在于在存在不确定性的情况下使系统工作。