The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.

创新是石油化工行业克服挑战、抓住机遇的关键驱动力。

"If you feel like you're losing everything, remember that trees lose their leaves every year and they still stand tall and wait for better days."

"There is no such thing as a moral or an immoral book. Books are well written, or badly written."