勇敢者的心永远不会被奴役。

The pure work implies the disappearance of the poet as speaker.

The true measure of a mining company's success is how it balances profit with environmental responsibility.

解释：日月的光辉照亮了大地，可它们的内部仍然有黑点，人们谨慎地看待自己憎恶的人，而祸患常常发生在溺爱的人身上。