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性行为的基本类型
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2.
异性性交:
生殖器性交
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性交合
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怀孕的好机会
这种性交合体位会增加怀孕的机会，因为它使射精得以靠近子宫颈。
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Better chance of pregnancy
This coital position increases the chance of pregnancy because it allows for an ejaculation close to the cervix. |
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性交合的技巧 8
也有喜欢自己保持相当被动的女子，她们喜欢一边仰卧一边承载着男方的体重。对于她们来说，“传教士体位”（男方面对女方居上位）甚至可能是最有益的。此外，如果她们以这种体位屈曲双腿，可以使阴茎深深地插入阴道，因而增加受孕的机会。（射出的精液在临近子宫颈形成所谓的精池，而女子只是在性交合之后保持仰卧一会儿。）此外，对许多女子来说，阴茎深深的插入本身会增加性刺激强度，因而可以自然而然地转换至性交合的可能的体位。
最后，我们要重申，体胖或体弱者一边侧卧一边性交合通常最为舒适。甚至，以侧卧位时的后入法可能是所有性交合方法中压迫最小的方法。自然，这种方法本身对妊娠晚期的妇女也适用。 |
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Basic Types of Sexual Behavior |
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2. Heterosexual Intercourse: Genital Intercourse |
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Coitus |
Techniques of Coitus 8
There are also women who prefer to remain rather passive themselves, and who enjoy lying on their backs while carrying the weight of a man's body. For them, the "missionary position" (man on top of woman, facing her) may indeed be the most rewarding. Furthermore, if they flex their legs in this position they make it possible for the penis to penetrate very deeply into the vagina, thus increasing the chance of a pregnancy. (The ejaculated semen forms a so-called seminal pool close to the cervix, and a woman can favor fertilization simply by remaining on her back for a while after coitus.) Furthermore, the deep penetration itself may be sexually rewarding for many women, and thus they may spontaneously shift to coital positions which make this possible.
Finally, it remains to be stated that people who are obese or weak usually are most comfortable during coitus while lying on their sides. Indeed, a rear entry approach in this position may be the least stressful of all. It naturally also recommends itself to women in the later stages of pregnancy. |
