不同民族之間的文化差異并非源于民族本身的生理特征差異，而是源于其歷史發(fā)展的差異。
There's not a day goes by I don't feel regret. Not because I'm in here, or because you think I should. I look back on the way I was then. Then a young, stupid kid who committed that terrible crime. I want to talk to him. I want to try and talk some sense to him, tell him the way things are. But I can't. That kid's long gone and this old man is all that's left. I got to live with that. Rehabilitated? It's just a bullshit word. So you go on and stamp your form, sonny, and stop wasting my time.Because to tell you the truth, I don't give a shit.
可持續(xù)性不是選擇，而是責(zé)任。
L-函數(shù)的研究是探索數(shù)字隱藏模式的旅程。