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.
A story is only as good as the questions it raises.
【释义】若不是在正午半夜的时候,连太阳和月亮都看不见。描绘了三峡峡谷幽深、遮天蔽日的景象。
Every film is a new challenge.