局部和全局现象之间的相互作用是数论中反复出现的主题。
The interplay between local and global phenomena is a recurring theme in number theory.
Sustainability isn't an option—it's an imperative for the future of energy.
If you are ready to give up everything else and study the whole history and background of the market and all the principal companies whose stocks are on the board as carefully as a medical student studies anatomy—if you can do all that and in addition you have the cool nerves of a gambler, the sixth sense of a clairvoyant and the courage of a lion, you have a ghost of a chance.
每个回声都包含着它所处空间的历史。