gravel pebble mixture 砂砾卵石混合料
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。
The cushion layer for the dam is constructed with the material prepared mainly with natural sandy gravel and mixed with proper amount of pebble and coarse sand.
大坝垫层料采用以天然砂砾料为主、掺入小石和粗砂以调整级配的方式生产。
Thinking that a pebble or a piece of gravel is the gem, they grab it and cry out, 'I've got the gem!
想一想那是一个卵石或者一块砂粒是宝石，他们抓住它并且大声叫我找到宝石！
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