释义:在富贵时,朋友无数;一旦遭遇困难,却无人帮助。
Mathematics is the language with which God has written the universe.
The future of food depends on our ability to balance productivity with responsibility.
不要让你的火焰熄灭,一点一点地,不可替代的火花。
The only way to tell the truth is to speak without a mouth.