知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。 Place a tiny bit a lot more eloquently, "engineering is usually a functional way for human society to alter, modify and Enhance the Actual physical globe all over us in order that humans might have a better existence," explained David Guo, an associate professor of engineering at https://www.facebook.com/P.concretepilecenter