精神力

例句：

1. 1. The scientist's research has greatly enhanced our understanding of the human spirit.
   科学家的研究极大地增强了我们对人类精神的理解。
2. 2. The story is about a man who overcomes his fear to achieve greatness.
   这个故事讲的是一个人克服恐惧，实现伟大的故事。
3. 3. The leader's courage inspired everyone to work together for a common goal.
   领导者的勇气激励了每个人为了共同的目标团结一致。