underdrain

n. 阴沟, 地下沟道, 盲沟, 暗渠

发音

US

词形变化

underdrains 复数 underdrains underdrained underdraining underdrains 三单 underdraining 现在分词 underdrained 过去式 underdrained 过去分词

释义与例句

n.
  1. 1.

    An underground drain or trench with openings through which the water may percolate from the soil or ground above.

v.
  1. 1.

    To drain by forming an underdrain or underdrains in.

    及物

词源

From under- + drain.

来源：wiktionary