Every exhibition is a temporary monument to a particular moment in time.
小规模渔业对于平衡生态系统和大规模养殖同样重要。
Leadership is about making the tough decisions and standing by them.
科学的力量在于它的普遍性和无私性，它超越了国界和文化的限制。
"I can resist everything except temptation."
尿素合成是一个幸运的发现，但它开辟了一个新的研究领域。