求翻译：因为河底的沙层上面浮着大量工业垃圾、污泥等，严重影响了挖沙工作，我们公司利用我们的先进研发技术，会先用我们的挖泥船在挖沙之前先把垃圾障碍清除，大大提高了挖沙的效率。是什么意思？

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Because of the layers of sand floating above a large industrial waste, sewage sludge, and seriously affect the dredging work, we use our advanced research and development of technology, we use the dredger in dredging before spam barriers, and greatly improve the dredging efficiency.

Because above the river bottom sand bed is floating massive industry trash, the sludge and so on, affected seriously has dug the sand work, our company used our advanced research and development technology, could use our dredge boat in dug in front of the sand trash barrier to eliminate first first,

Because the bottom of the sand layer is covered with a lot of industrial waste, sludge, seriously affecting the dredging work, we take advantage of our advanced technology, first before using our dredgers in dredging obstacle clearing garbage, greatly improves the efficiency of dredging.

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