weighting solid 中文意思是什麼
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Sediment and soil were removed to expose the bedrock and enable the dams to be erected on solid rock. the cofferdams were retained, and the seaward one served as a protective structure. the seawardside of the cofferdam for the east dam was placed with more than 7, 000 dolosses, each weighting 25 tonnes to stop the pounding ocean waves
堤壩建成后，圍堰仍然保留，用作主壩的護堤，西壩的護堤，向海的一面更安放了七千多塊每塊各重25噸的防波石，阻擋來自南中國海及太平洋海浪的沖擊。
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