性交

Speed of the ejaculation when although same individual is in,making love every time is not identical also, be like newly-married the first time sexual intercourse, marriage hind meets again after a long separation, or abstinency too long hind make love for the first time, because the man is excessive excited, ejaculation happening is very fast, even premature ejaculation, this also is normal completely, need not much Lv, increase as coital frequency, can adjust normal level.

即使同一个人在每次性交时射精快慢也不相同，如新婚初次性交，婚后久别重逢，或禁欲过久后第一次性交，由于男方过度兴奋，射精发生很快，甚至早泄，这也完全是正常的，不必多虑，随着性交次数增加，就会调整到正常水平。

Be in the Newton total hospital of Covington, doctors discover: In the male patient that takes Wei elder brother, its wife people the occurence rate that secrete make water is infection also has elevatory, because its sex spouse takes time of the sexual intercourse after Wei elder brother to lengthen,this may be, place of coital number increase causes, be in especially 55-75 year old woman, the vaginal secretion of these women decreases, counteractive ability under young woman.

在Covington的Newton总医院，医生们发现：在服用伟哥的男性患者中，其妻子们泌尿系感染的发生率也有升高，这可能是由于其性伴侣服用伟哥后性交时间延长、性交次数增多所造成的，尤其是在55-75岁的妇女，这些妇女的阴道分泌物减少，抵抗能力低于年轻女性。

F. The postcoital test is used to assess sperm cervicalmucus interaction after intercourse.

性交后试验被用于评价性交后精子宫颈黏液的相合性。

Empty pee is discharged first before massaging, intercrop of husband and wife caresses a movement, in caress the foundation that causes sexual excitement adequately to go up, place common massager again upper part or perineal ministry are combined in pubic bones, open massager switch comes slow archives, increase gradually later, till in grain is exciting, massage 10-15 every time minute, reach certain level when sexual pleasure, when be about to ejaculate, stop to massage namely, have sexual intercourse instantly, if make love for some time to still do not have ejaculation feeling, the reentry when undertaking massage coming be about to ejaculating again makes love all right, make seminal fluid is shot as far as possible inside the vagina.

按摩前先排空小便，夫妻间作爱抚动作，在充分爱抚引起性兴奋的基础上，再将普通按摩器放置在耻骨联合上方或会阴部，开启按摩器开关至慢档，以后逐渐增大，直至中小量刺激，每次按摩10%26mdash；15分钟，当性快感达到一定程度，快要射精时即停止按摩，立即进行性交，如性交一段时间仍无射精感，再进行按摩至欲射精时再进行性交，尽可能使精液射在阴道内。

"Other species of Treponema cause similar but mild er, nonsexually transmitted forms of syphilis."

其它一些种类的密螺旋体可导致非性交性的梅毒，与性交性梅毒相类但程度较轻。

"Other species of Treponema cause similar but milder , nonsexually transmitted forms of syphilis."

其它一些种类的密螺旋体可导致非性交性的梅毒，与性交性梅毒相类但程度较轻。

It simply means that, when having intercourse, the man suddenly withdraws his penis from the woman's vagina just before he ejaculates (this does not interrupt the coitus, but actually ends it).

意思很简单，那就是当进行性交时，男方在射精前骤然把他的阴茎抽离阴道（这并不是性交中断，而是终止性交）。

It's not just about intercourse … In this day and age a significant percentage of people use condoms when they are engaging in either vaginal or anal intercourse.

其实安全的性生活不只是局限于性交安全。。。在这个年代有一大部分人在性交或肛交的时候使用避孕套。

In order to protect yourself, take good care of your sexual partners, sexual contact, whether vaginal intercourse, anal or oral sex, must use condoms.

为了保护自己，爱护你的性伴侣，在性接触时，无论阴道性交、肛交或口交，都必须使用安全套。

The disease is spread by sexual contact, i.e. vaginal, oral, and anal intercourse.

该传染病通过性接触传染，也就是阴道性交、口交和肛交都可以传染该病。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。