质量不是保证；它是一种证明。
Quality is not a assurance; it is a proof.
乳制品行业必须发展以满足下一代的需求。
"I think children are naturally curious and open to new ideas, and that's something I try to capture in my books."
生存的绵延不是一个长度的问题，而是一个深度和密度的问题。