单词coitus
n.: (特指人类的)交媾
网络: 性交；交配；性交合
配种
同栖
交配
交尾
(特指人类的)交媾,交合
After all, unlike a man with a limp penis, a woman with an unlubricated vagina can still easily begin coitus, if she so chooses.
毕竟，不像阴茎疲软的男性那样，阴道无润滑的女性如果决定进行性交的话，她仍然能够容易地开始性交。
At that stage, they are not allowed to have coitus or even to try reaching orgasm any other way.
偏偏又是在这个阶段，不允许他们有性交甚或不允许以任何方式达到性高潮。
Sheldon: I believe they engaged in coitus but more importantly, if Leonard had not abandoned his story, would you have found it plausible?
谢尔顿：我确信他们是在性交，但更重要的是，如果莱纳德没有半途而废，你觉得那个故事可信么？
"England boasts some of the finest lovemaking in the world, with a tradition of coitus going back generations, " lovers are told.
生产商还向情侣们鼓吹：“英国人号称做爱情致冠全球，性爱传统代代传。”
now that you and Leonard are no longer having coitus.
因为你和莱纳德如今不交媾了
Objective: To determine and analyze the etiologies and modalities of treatment for unconsummated coitus due to vaginal penetration failure.
目的：找寻并分析原发性阴道插入失败，导致性交未完成的原因，以及治疗的模式。
In ancient China, kissing was considered to be on a par with coitus, and thus was confined to the bedroom.
在古中国，亲吻就等同于性交，因此必须是在卧室里。
In older marital guides, this kind of sexual intercourse was often described as " petting " or as a "foreplay" to coitus.
在较为过时的婚姻指南中，手交常常被描述成“爱抚”或发展到性交的“前戏”。
a contraceptive method in which coitus is initiated but the penis is deliberately withdrawn before ejaculation .
性交中在射精前阴茎有意抽出的节育方法。
The physiological significance of change of sex steroid levels after coitus will obviously require further investigation.
性交后性腺激素变化的意义有待进一步研究。