Allow your disappointment to form a pearl just as an oyster does when an irritating grain of sand gets inside its shell, but grab the pearl before the sand gets in your eyes.
把你的失望孕育成一枚珍珠，就像牡蛎对待一颗落入壳中的沙砾一样，但要在沙砾进入你的眼睛前抓紧珍珠。
The developed materials through the sand slurry abrasion test have been successfully put into practice in the shell of dredging pump and the cutter piece.
研究证明，该试验机能模拟疏浚工况，已成功应用在挖泥船泥泵壳和绞刀片耐磨材料的磨损试验上。
The aquatic, wormlike larva of the caddis fly, enclosed in a cylindrical case covered with grains of sand, fragments of shell, and other debris.
水生的，石蚕蛾的蠕虫状幼虫，包在被沙粒、卵壳碎片以及其它碎片盖住的柱形盒内。
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