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.