英汉例句双语例句Methods From 1990 to 2002,32 cases with stercoral perforation of colon were analyzed retrospectively. 17 Cases were diagnosed clearly before operation.方法对1990～2002年收治的粪块性结肠穿孔的32例临床资料进行回顾性分析。stercoral perforation更多例句词组短语短语stercoral perforation of colon 结肠粪性穿孔stercoral perforation更多词组