Lay a 2-inch layer of pebble-sized gravel around the plants. Choose a gravel color to complement your home or the flowers in your desert garden.
在植物周围铺上2英尺厚的砾石。砾石的颜色需和您的房屋以及植物本身的颜色相协调。
He picked up a good-sized piece of gravel and started to wind-up.
他捡起一块相当大的石子，开始拉紧橡皮带。
The nano-sized material is added to hydraulic-fracture proppant packs or gravel packs on the fly to stabilize formation fines.
上述纳米级材料被添加到水力压裂支撑剂充填层或砾石充填层，以在上述充填层中起稳定地层微粒的作用。
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