| 单词 | unfrequent | 
| 释义 | unfrequent听听怎么读 
                            英 ['?n'fri:kw?nt]
                         
                            美 [??n'frikw?nt]
                         是什么意思 不常发生的,不常见的; 学习怎么用 权威例句[Adrenal carcinoma: an unfrequent cause of severe hypokalemia].[Crystal arthropathies, an unfrequent cause of poplyteal cyst].[Sclerosing sertoli cell tumor. An unfrequent type of testicular neoplasm].[Ureteral obstruction: an unfrequent complication of Burch colposuspension. Report of two cases].Mining Interesting Disjunctive Association Rules from Unfrequent ItemsMining Interesting Disjunctive Association Rules from Unfrequent Items[Descending necrotizing mediastinitis: an unfrequent life-threatening complication][Granulocytic sarcoma (chloroma) of small bowel: an unfrequent cause of intestinal obstruction]Laryngeal Chondrosarcoma: an Exceptional Localisation of a not Unfrequent Bone Tumor.Granulocytic sarcoma (chloroma) of the small bowell: an unfrequent cause of intestinal obstruction | 
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