blackness

例句：

1. 1.The night sky was filled with the blackness of the moon.
   夜空被月亮的黑暗所充满。
2. 2. The darkness of the forest made it difficult to see.
   森林的黑暗使得很难看见。
3. 3. The blackness of the ocean is breathtaking.
   海洋的黑暗令人惊叹。