自我与其说是一个实体，不如说是一个过程，而教育的不断任务是改变这个过程，发展它的活动，并引导它进入高效的渠道。
The self is not so much a substance as a process, and it is the continual task of education to change the process, to develop its activities, and to guide it into channels of efficiency.
我们必须拥抱变化以保持在石材行业的领先地位。
The only way to save a rhinoceros is to save the environment in which it lives, because there's a mutual dependency between it and millions of other species of both animals and plants.
小于给定数的素数个数是该数的一个函数。