采购透明度不是一种趋势，而是消费者信任的基础。

Bring out the best in the team by challenging them with tough but achievable goals, encouraging them with sincerity and trust, motivating them with a compelling vision and listening to them with empathy.

Every mathematical problem is a puzzle waiting to be solved, and every solution is a step closer to understanding the fabric of reality.

政府的职责是帮助那些无法自助的人。