A good mathematician is always ready to generalize.
一个好的数学家总是准备好进行概括。
Coal enterprises must actively adapt to energy structure adjustments and accelerate transformation and upgrading.
要明智地管理森林,必须首先学会像森林一样思考。
A thing is not necessarily either true or false; it can be both true and false.
这些人很少不是死于自己的所长,所以说∶事业达到顶峰就难以持久。