The true power of mathematics is not in its complexity, but in its simplicity and elegance.
数学的真正力量不在于它的复杂性,而在于它的简洁和优雅。
Coal enterprises must enhance their sense of social responsibility and achieve the unity of economic and social benefits.
Sustainability is at the heart of everything we do in the dairy industry.
The only thing worth writing about is the human heart in conflict with itself.