The main dam of Qingfengling reservoir is designed as core shellsand 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。
2
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.