A shortage is a sign that somebody is keeping the price artificially lower than it would be if supply and demand were allowed to operate freely.
我们有责任在应对气候变化的同时提供可靠且负担得起的能源。
要有继续追逐梦想的勇气。
The future of medicine lies in understanding the unseen—viruses, genes, and the invisible forces that shape health.
"A story is a way to explore the world without leaving home."