denseness

例句：

1. 1. The soil is very dense, making it difficult to dig a hole.
   土壤非常密集，很难挖出一个洞。
2. 2.The forest was so dense that even the sunlight could not penetrate through.
   森林非常密集，连阳光都透不进去。
3. 3.The dense fog made it hard for anyone to see beyond a few feet.
   浓雾密布，使得任何人都难以看远。