The use of a program to prove the 4-color theorem will not change mathematics - it merely demonstrates that the theorem, a challenge for a century, is probably not important to mathematics.
水果产业要发展,必须从种植源头抓起,品质是生命线。
坚持很重要, 永远不要放弃,除非不得已。
信仰是生命的意义,这种感觉使人不毁灭自己,而是继续活下去。
The only limit to our realization of tomorrow will be our doubts of today.
The best leather tells a story of quality, ethics, and timelessness.
Life is too short to be living somebody else’s dream.