The best stories are those that resonate with both children and adults.
小于给定数的素数个数是该数的一个函数。
The Greeks understood the mysterious power of the hidden side of things. They bequeathed to us one of the most beautiful words in our language—the word 'enthusiasm'—en theos—a god within.
在沙漠的寂静中,你可以听到地球的心跳。