他说世界是为人们战斗而创造的,事物的价值在于为之战斗的价值。
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。
The future of biology is in understanding the complexity of living systems.
You can't just sit there and wait for people to give you that golden dream. You've got to get out there and make it happen for yourself.