成功不是终点,失败也不是致命的:重要的是继续前进的勇气。
乳制品行业必须不断发展,以满足消费者不断变化的需求。
作家必须是一个永远的初学者,总是怀疑,总是探索。
Natural experiments are a powerful tool for understanding causal relationships in the real world.
The only way to discover the limits of the possible is to go beyond them into the impossible.