You have it wrong . coitus means to make babies 你搞错了吧，交配是“造人”的意思
2.
You have coitus with her 我不是很明白-你跟她交配
3.
We have observed a wide range of motivations for extramarital coitus 我们观察到了各种各样的婚外性行为的动机
4.
We have observed a wide range of motivations for extramarital coitus 我们观察到了各种各样的婚外性行为的动机
5.
Frequently have difficulty in reaching orgasm in one s marital coitus in the first year of marriage 在结婚头一年时常不容易达到极致
6.
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， * *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。
7.
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 contraceptives they use do not work 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、粗心大意和缺乏责任心，或他们所使用的避孕药具不起作用。
8.
Using the mouse fetal ovary serum - free culture model , fetal ovaries from 14 day post coitus ( 14 dpc ) mouse were cultured , and treated by ay9944 - a - 7 , nystatin and rs - 21745 . the results showed that 0 . 025 , 0 . 0625 and 0 . 125 um ay9944 - a - 7 or 25 , 50 and 75 iu / ml nystatin increased the total number of follicles per ovary significantly ; however , ay9944 - a - 7 and nystatin at the same doses could n ' t cause the same effect on the number of growing follicles and the average diameter of five largest follicles per ovary . 50 u . m rs - 21745 decreased the total number of follicles , the number of growing follicles and diameter of follicles per ovary significantly after 48 h 首先利用小鼠胚胎卵巢的体外无血清培养模型，培养妊娠14天( 14daypost - coitus , 14dpc )小鼠胚胎卵巢，分别添加能促进mas积累的ay9944 ，制霉菌素，和能抑制mas产生的rs - 21745进行处理，结果表明： 0 . 025 、 0 . 0625利0 . 125 m的ay9944 - a - 7与25 、 50和75iu ml的制霉菌素能显著提高卵巢中形成卵泡的总数量，但是对生长卵泡数和卵泡直径的作用不同；而mas合成抑制剂rs - 21745能够显著降低形成卵泡的总数量。
