我必须研究政治和战争,以便我的儿子们可以自由地研究数学和哲学。
I must study politics and war that my sons may have liberty to study mathematics and philosophy.
大脑有专门的网络来维持警觉性、定向感觉事件和解决反应之间的冲突。
The reaction of weak management to weak operations is often weak accounting.
The periodic table is a testament to human curiosity and ingenuity.