"The past is a foreign country; they do things differently there."
I don't have any message. I just paint pictures.
电磁场的方程是从实验事实中推导出来的。
He who sacrifices freedom for security deserves neither.
Every seed we plant today is an investment in tomorrow's food security.
常识告诉我们，业绩来来去去，但成本永远存在。