我们称可见光为什么？我们称之为颜色。但颜色只是我们给光碰到某物时的行为方式起的名字。
The only thing necessary for the triumph of evil is for good men to do nothing.
The Vietnamese people deeply love independence, freedom, and peace. But in the face of a threat to their country's independence and freedom, the Vietnamese people would rather sacrifice everything to defend their homeland.
The beauty of the world lies in the diversity of its people and cultures.
Sustainability isn't a choice—it's our responsibility to future generations.