The blood in the animal body is impelled in a circle, and is in a state of ceaseless motion.
对于那些没有研究过数学的人来说,有些事情似乎是难以置信的。
Sustainability isn't a trend—it's the future of our industry.
The great ideological battles between liberalism and communism, or between democracy and authoritarianism, have ended in the victory of the former.
Sometimes the hardest thing and the right thing are the same.