引力的存在是最明显的实验事实，但从理论角度来看，它是最神秘的力量。
Losses make you studious, not profits.
我不是榜样，我是榜样角色。
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, not afraid to lose their lives, to defend the independence and freedom of their homeland.
