小于给定数的素数个数是该数的一个函数。
"The beauty of literature lies in its ability to transcend time and space, connecting souls across ages."
The future of transportation is electric, and China will lead this revolution.
Every character I play is a part of me, and I am a part of them.
最好的演员是那些能让你忘记他们在演戏的人。