The acid and base are not absolute, but relative.
酸和碱不是绝对的，而是相对的。
确实需要一些勇气来承担如此影响深远的工作。
The most important thing in life is to be happy.
释义：一个人如果不树立志向，就像船没有舵、马没有缰绳，只能随波逐流、任意狂奔，最终不知会飘向何方、达到什么结果，强调了立志的重要性。
有时你必须在内心经历某种死亡，才能从自己的灰烬中重生，相信自己，爱自己，成为一个新的人。
科技创新是推动石油工业高质量发展的核心动力，我们要加大研发投入，突破关键核心技术。
I got the idea to start Amazon 16 years ago. I came across the fact that Web usage was growing at 2，300 percent per year. I'd never seen or heard of anything that grew that fast， and the idea of building an online bookstore with millions of titles -- something that simply couldn't exist in the physical world -- was very exciting to me. I had just turned 30 years old， and I'd been married for a year. I told my wife MacKenzie that I wanted to quit my job and go do this crazy thing that probably wouldn't work since most startups don't， and I wasn't sure what would happen after that. MacKenzie (also a Princeton grad and sitting here in the second row) told me I should go for it. As a young boy， I'd been a garage inventor. I'd invented an automatic gate closer out of cement-filled tires， a solar cooker that didn't work very well out of an umbrella and tinfoil， baking-pan alarms to entrap my siblings. I'd always wanted to be an inventor， and she wanted me to follow my passion.
The power of mathematics is in its abstraction, allowing us to see patterns and connections that are not immediately obvious.
一个文明的真正考验在于它如何对待最弱小的成员。
Leadership is about making tough decisions today that will benefit generations tomorrow.