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。
You are never too old to set another goal or to dream a new dream.
"The best stories are the ones that challenge you to think differently."
"The world is full of people who have never, since childhood, met an open doorway with an open heart."
诗人是人类情感的守护者。
Never let fear stop you from pursuing your dreams.
Childhood is a foreign country we've all visited but can't quite remember.