The interplay between analysis and algebra is the driving force behind many breakthroughs in number theory.
The reality is: sometimes you lose. And you're never too good to lose. You're never too big to lose. You're never too smart to lose. It happens.
一次又一次地后悔到终身,还不如不做后悔之事而无后顾之忧。
Efficiency and environmental responsibility can—and must—go hand in hand.