The acid and base of a given system are not absolute but relative to each other.
给定系统中的酸和碱不是绝对的，而是相互关联的。
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
I'm not a person who thinks that everything happens for a reason, but I do believe that if you work hard and stay true to yourself, good things will come.
无论你的背景或出身如何，只要你有梦想和目标，这才是最重要的。
The boy and his heart had become friends, and neither was capable now of betraying the other.