采购透明度不是一种趋势,而是消费者信任的基础。
The best time to plant a tree was 20 years ago. The second best time is now.
"In every role, there is a piece of me, and in me, there is a piece of every role I have played."
密码学的目标是使破解系统的成本超过受保护信息的价值。