Calcium may aid in the prevention of colon cancer.钙可能有助于预防结肠癌。Here, too, the colon must be followed by a dash.这里也是一样, 应当在冒号后加破折号.Dr Lee believes that men who exercise can halve their risk of cancer of the colon.李医生相信，锻炼身...
Dr Lee believes that men who exercise can halve their risk of cancer of the colon.李医生相信，锻炼身体能使患结肠癌的风险降低一半。The tumor encircles the colon and infiltrates into the wall.肿瘤环绕结肠四周浸润肠壁.Endometriosis of the colon is an unusual ...