To understand recursion, one must first understand recursion.
要理解递归，首先必须理解递归。
The Vietnamese people deeply love independence, freedom, and peace. But in the face of a threat to their country's independence, the Vietnamese people would rather sacrifice everything than lose their country and be enslaved.
创新是企业发展的永恒动力，只有不断突破自我，才能在竞争中立于不败之地。
"To act is to live a thousand lives, to feel a thousand hearts beating as one."
最成功的产品往往是解决日常问题的最简单方案。
某人的一小步就是人类的一大步。