erosion
noun [ U ] uk/ɪˈrəʊ.ʒən/ us/ɪˈroʊ.ʒən/
(PHYSICAL DAMAGE)
C1 侵蚀；腐蚀；磨损
the fact of soil, stone, etc. being gradually damaged and removed by the waves, rain, or wind
soil/coastal erosion 水土流失/海岸侵蚀
(NEGATIVE EFFECT)
C2 削弱；逐步的破坏
the fact of a good quality or situation being gradually lost or destroyed
The survey reveals a gradual erosion of the president's popularity and support. 民意调查显示了总统声望和所获支持的逐渐削弱。