mobile sand

  • 流砂地

mobile sand的用法和样例:

例句

  1. The water mains had numerous breaks, with the great majority of the breaks occuring in sand, silt, or filled ground.
    自来水干线有许多处破裂,但绝大多数的破裂发生在砂地,淤泥地或回填土中。
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