erode

erode
[ɪˈrəʊd]
verb
  1. [with obj.](常作 be eroded)(of wind, water, or other natural agents) gradually wear away (soil, rock, or land)
    （风、水或其他自然力）侵蚀（土壤，岩石，田地）
    the cliffs on this coast have been eroded by the sea.
    该海岸上的峭壁受到了海水的侵蚀。
    ■[no obj.](of soil, rock, or land) be gradually worn away by such natural agents
    （土壤，岩石，田地）遭侵蚀
    ■(figurative)gradually destroy or be gradually destroyed
    (喻)逐步毁坏；受到破坏
    [with obj.]this humiliation has eroded what confidence Jean has.
    这种耻辱使简渐渐地失去了信心。
    [no obj.]profit margins are eroding.
    利润率正在降低。
    ■(Medicine)(of a disease) gradually destroy (bodily tissue)
    (医)（疾病）损害（身体组织）
派生
erodible
adjective
语源
  1. early 17th cent.: from French éroder or Latin erodere, from e- (variant of ex-) 'out, away' + rodere 'gnaw'
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