The main dam of Qingfengling reservoir is designed as core shell sand dam, and some problems caused by construction material exist here.
青峰岭水库主坝为宽心墙砂壳坝,存在着由于筑坝材料引起的坝体质量问题。
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。
贝壳放在沙子上面。
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