Green grass or green grass?

It is green grass, not green grass. Green grass means: green grass is like a mattress on the floor. Often refers to a meadow that is temporarily resting. Also known as "green grass". Wormwood, bedding, cushion, mattress, blanket: ~ mattress. ~ seats. ~ Cooking (bedding and cooking, extended to sleeping and eating). Green grass ~. Green grass is synonymous with green grass and fragrant grass, and the antonym is rotten grass. Broken grass, described as barren grass everywhere, is extremely desolate. There is dying grass in the poem: "dying grass has no intention of falling into the sky, and the sound of geese is as far away as Xiaoguan." ; "Seeing the smoke trees, the grass withered and the boat crossed." ; "Where are people, even the sky is getting dark, and the way home is broken." .