国际政治是一项残酷而危险的业务，期望国家按照道德原则行事是愚蠢的。
International politics is a ruthless and dangerous business, and it is foolish to expect states to behave according to moral principles.
自己做事切不可拖泥带水、反复无常及琐碎。替别人做事却不能怕麻烦、不能怕反复以及琐碎。
The laser is to attosecond physics what the telescope was to astronomy.
"RNA interference is a fascinating process that has opened up new avenues for understanding gene regulation and has potential therapeutic applications."
I don’t know how tall I am or how much I weigh. Because I don’t care.
"Life is not about waiting for the storm to pass, but learning to dance in the rain."