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canker/
ˈkæŋkər
/
1.noun[u] [Botany]
黑腐病，溃疡病
2.noun[c] [Medicine]
（尤指嘴唇或口腔的）溃疡
3.noun[c] [Figurative]
祸患，祸根，祸害
4.noun[u] [Veterinary]
（尤指猫狗耳部的）溃疡
5.vi.
被传染溃疡；受到腐蚀，腐化
6.vt.
使溃疡；使腐败
7.verb [Figurative]
使腐败，腐蚀（某人）的心灵