canker of pear

例句：

1. 1.The doctor diagnosed the patient with a canker of pear.
   医生诊断病人患有梨癌。
2. 2.The researcher found that the canker of pear was related to the spread of cancer.
   研究者发现梨癌与癌症扩散有关。
3. 3.The patient underwent surgery to remove the canker of pear.
   病人接受了手术以切除梨癌。