Innovation in energy must balance environmental responsibility with economic viability.

If you don't give up, you still have a chance. Giving up is the greatest failure.

拓扑学是对图形在任何变形下保持不变的性质的研究。

民主不仅仅是投票，它是一种基于尊重多样性和宽容的生活方式。

家庭是一个生产和消费商品与服务的小工厂。