It finally does, dying away like a siren until all that\' s left is the shallow gasping and panting of post-coitus. We hear languorous laughter, moans of satisfaction. 最终,像渐渐消失的塞壬(者注:传说中的女海妖,她用美妙的歌声诱惑船只上的海员,从而使船只在岛屿周围触礁沉没)它停了下来,只剩下交媾后的轻呼和喘息。可以听到柔弱的笑声和满意的呻吟。
Proestrus: The female attracts males, has a bloody vaginal discharge and her vulva is swollen. Proestrus lasts approximately nine days; the female, however, will not allow coitus at this time. 发情前期:母犬开始引诱公犬,阴道有血渗出,阴户涨大。发情前期约持续九天,不过,这段时间,母犬并不与公犬交配。
However, most often the case is less dramatic: Some people who engage in coitus simply do not know about contraception, or they are unable to get contraceptives, or they are young, careless and irresponsible, or the contracept 可是,最常见的则是荒唐可笑:那些盲目投入性行为的人对避孕一无所知,或不能得到避孕药具,或他们少不省事、心大意和缺乏责任心,或他们所使用的避孕药具不起作用。
coitus
[ noun ] the act of sexual procreation between a man and a woman; the man's penis is inserted into the woman's vagina and excited until orgasm and ejaculation occur <noun.act>