我们必须从一开始就考虑产品的生命周期终结问题。
问题的解决是突然出现的,而不是通过逐步、一步一步的过程来接近的。
The future of dairy lies in balancing tradition with innovation.
I have already carried out my duty. I have proved the Poincaré conjecture and I have nothing more to do in mathematics.