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...
Some adolescents might be more sexually mature and provocative than others.一些青少年可能相比同龄人在性方面更成熟、更具挑逗性。She may have been sexually assaulted by her killer.她可能遭到过凶手的性侵犯。If you're sexually harassed, you ought to do somet...