dredge

dredge1
verb
  1. [with obj.]clean out the bed of (a harbour, river, or other area of water) by scooping out mud, weeds, and rubbish with a dredge
    （用挖掘机、挖泥船）疏浚（港口、河流等水域）
    ■bring up or clear (something) from a river, harbour, or other area of water with a dredge
    挖掘；捞出
    mud was dredged out of the harbour.
    从海港里挖出泥。
    [no obj.]they start to dredge for oysters in November.
    他们从十一月开始捞牡蛎。
    ■(dredge something up)(figurative)bring to people's attention an unpleasant or embarrassing fact or incident that had been forgotten
    (喻)揭（疮疤）；翻（旧帐）
    I don't understand why you had to dredge up this story.
    我不明白你为什么要翻出这件旧事。
noun
  1. an apparatus for bringing up objects or mud from a river or seabed by scooping or dragging
    挖掘机；挖泥船
语源
  1. late 15th cent. (as a noun; originally in dredge-boat): perhaps related to Middle Dutch dregghe 'grappling hook'
dredge2
verb
  1. [with obj.]sprinkle (food) with a powdered substance, typically flour or sugar
    （用面粉、糖粉等）撒（或涂）在（食物）上
    dredge the bananas with sugar and cinnamon.
    在香蕉上撒上糖和肉桂。
语源
  1. late 16th cent.: from obsolete dredge 'sweetmeat, mixture of spices', from Old French dragie, perhaps via Latin from Greek tragēmata 'spices'. Compare with dragée
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