那场战争是人类历史上最黑暗的时期之一。

That war was one of the ___darkest periods in human history.

绝望将他引向了法律的阴暗面。

Desperation led him to the ___dark side of the law.

她的小说探索了人类心理的阴暗角落。

Her novel explores the ___dark corners of the human psyche.