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性行为的基本类型
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2.
异性性交:
异性生殖器性交
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性器官并置
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正深情拥抱的夫妇
印度中部卡久拉霍的寺庙。
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Couple in loving embrace.
Hindu temple in Khajuraho, central India. |
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十几岁的未婚青少年第一次开始尝试性交时，他们因为害怕非意愿怀孕，或者因为女孩想要保持“童真”，常常会避免阴茎插入阴道。不过，因为男孩在他们的做爱游戏中，通常至少会变得非常的兴奋，女孩有时通过“深度爱抚(heavy
petting)”[1]会使男孩达到性高潮。例如，没有感到自己非常兴奋的女孩可能会鼓励他的男友一边完全不脱衣服躺在她的身上，一边做出性交的样子。多数男孩在这种方式里容易达到性高潮；然而，就男孩自身来说，他们会谈到诸如“过干瘾(dry
humping)”[2]的经验。当男孩的女友逐渐同意他有更多自由的时候，他可能脱掉部分或全部的衣物，最终这对性伴甚至可能决定在完全裸体的情况下继续他们的体验。不过，这个女孩也许暂时仍然害怕怀孕，或想要保持处女膜的完整。她也可能担忧出血和疼痛，或担心感染上性传播疾病。尽管如此，只要男友不试图插入自己的阴道，她也许乐意他用阴茎摩擦她的阴户。的确，对性伴双方来说，这样的男女性器官并置(apposition
of
sex
organs)可能非常的快乐，并且，随着不断地实践，通过这种技巧，男女双方都有充分的理由能够达到性高潮。毕竟，阴茎受到了直接的刺激，并且当阴茎推进压向阴户的某个部位时，能间接刺激敏感的阴蒂和小阴唇。甚至正常从事性交合的夫妇，要是因为妻子有某种损伤或疾病，她的内部性器官变得过于敏感[3]，所以，有时也喜欢这种简单的性交形式。
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Basic Types of Sexual Behavior |
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2. Heterosexual Intercourse: Genital Intercourse |
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Apposition of Sex Organs |
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When unmarried teenagers first begin to experiment with sexual intercourse, they often avoid the insertion of the penis into the vagina because they fear an unwanted pregnancy, or because the girl wants to preserve her "virginity". However, since at least the boys usually become highly aroused during their loveplay, girls sometimes allow them to reach orgasm by "heavy petting". For example, a girl who does not feel very excited herself may encourage her boyfriend to go through the motions of coitus while lying fully clothed on top of her. Most boys easily reach orgasm this way, and, among themselves, they refer to the experience as "dry humping". As their girl friends gradually allow them more liberties, they may remove some or most of their clothing, and eventually the couple may even decide to continue their experiments in complete nudity. Nevertheless, the girl may, for a while, still fear a conception or want to keep an unbroken hymen. She may also worry about bleeding and pain, or an infection with a
sexually transmitted disease. Still, she may gladly permit her boyfriend to rub his penis against her vulva, as long as he does not try to insert it. Indeed,
such an apposition of the male and female sex organs can be quite pleasant for both partners, and, with some practice, both of them may very well become able to reach orgasm through this technique. After all, the penis is stimulated directly, and, as it pushes against certain areas of the vulva, it can indirectly stimulate the sensitive clitoris and the minor lips. Even couples who normally engage in coitus may sometimes enjoy this simple form of sexual intercourse, if the woman's internal sex organs become too sensitive because of some injury or disease.
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