并不存在一个自由美国和一个保守美国的区别 - 只有团结的美利坚合众国。
There's not a liberal America and a conservative America - there's the United States of America.
"The truth is not always beautiful, but the pursuit of it is."
The most important political distinction among countries concerns not their form of government but their degree of government.
The progress of aquaculture cannot be separated from the support of scientific research.