正是通过观察和反思的力量，人们才能找到方法。所以我们必须不断挖掘和钻研。

In science, we must be open to the possibility that our most cherished theories could be wrong.

没有青春的爱情有何滋味？没有爱情的青春有何意义？

Time does not heal all wounds, but it teaches us how to live with them.

投资研发就是投资乳制品的未来。