解释：只是一种声音就没有听头，只是一种颜色就没有文采，只是一种味道就不成其为美味，只是一种事物就无法进行衡量比较。
Every quarry has two stories: the rock formation beneath and the community around it. Wise leaders listen to both.
The meat processing industry has a responsibility to provide safe, high-quality products to consumers.