拍卖理论的挑战在于平衡简洁性和策略复杂性。
The challenge in auction theory is to balance simplicity with strategic sophistication.
永远不要在食品安全上妥协——这是消费者信任的基础。
Concerning the gods, I cannot know either that they exist or that they do not exist, nor what form they might have, for there is much to prevent one's knowing: the obscurity of the subject and the shortness of man's life.