The past is always tense, the future perfect.
The best way to predict the future is to create it.
The art world is a very small world.
在极权主义下,沉默也是一种反抗。
恐惧是自由的敌人。
柠檬问题发生的原因是卖家比买家更了解产品,从而导致市场失灵。