Pain is not always physical; sometimes the deepest wounds are the ones we cannot see.
痛苦并不总是身体上的；有时最深的伤口是我们看不见的。
"The immune system is like a double-edged sword; it can fight cancer but also needs to be controlled."
解释：才华有高下之分，没有古今之别；文章有真实、虚伪之差，没有新旧之异。
在F1中，如果你停滞不前，就等于在倒退。