sand bottomed meaning in Chinese

砂底的

They are found in seagrass , rubble - strewn sand bottom , and coral reef
海胆的管足比较长，用来爬行、呼吸、排泄及感应环境。
The diameter is 11 . 5 centimetres , whole wooden tire , red treasure sand bottom , adopt gold and silver to be flat to take off skill and technique , is it make various kinds of flowers line kinds to carve gold and silver thin slice , paste in painting foetus smooth of polishing with paint , after being dry , overall xiu several of celluloid paint is it show the honeysuckle line to grind and then , feel abundant , pattern and paint bottom reach same pingdu , push away light become a exquisite one flat to take off the lacquer ware in addition
直径11 . 5厘米，整木车胎，赤宝沙底，采用金银平脱技法，将金银薄片刻制成各种花卉纹样，用漆粘贴在打磨光滑的漆胎上，待干燥后，全面髹透明漆数层再经研磨显出金银花纹，质感丰富，花纹与漆底达到同样平度，再加推光则成为精美的平脱漆器。