We can see that the two parents have the same sex, which is genetically impossible.

1、

Analysis of syphilis and HIV infection situation among men who have sex with men in Jinan city

济南市男男性接触者梅毒和人类免疫缺陷病毒感染状况分析

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2、

He's an ambassador for the United Nations, has his own TV show, a clothing line, and is developing a range of condoms that glow in the dark to encourage people to have safe sex.

他出任联合国大使，拥有自己的电视节目和服装生产线，并且开发了一系列安全套旨在鼓励人们进行安全性行为。

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3、

Investigation of HIV high-risk behavior and infection among men who have sex with men in Nanning

南宁市男男性接触者艾滋病相关危险行为和感染状况的调查

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4、

A thirteen-year-old girl also named Priscilla was brought to the center at the age of five. Her mother wanted her to be educated. The girl says she is thankful especially for health reasons that she did not have her sex organs cut.

一位也叫Priscilla的13岁女孩5岁时被带到这个中心，她母亲希望她接受教育。

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5、

"Some studies have reported sex differences in mild cognitive impairment," she says," but the reports have been inconsistent."

她说：“一些研究报道轻度认知障碍有性别的不同，但研究结果并不一致。”

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6、

Okay, let's just skip all the inventions you can have sex with.

好吧，我们就跳过那些能“搞”的发明。

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7、

Inheritance of gender is highly conserved in the long-term evolution. Animals have different sex regulatory determination mechanism during development.

在生命漫长的进化过程中，性别的遗传是高度保守的，不同进化地位的物种在控制性别发育的过程中有着不同的决定机制。

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8、

Objective To estimate the population size of men who have sex with men ( MSM) using a multiplier method.

目的通过乘数法估算中国男性同性恋人群规模，为艾滋病疫情估计及防治工作提供依据。

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9、

The students are also being made to have compulsory sex education lessons.

大学生们还必须参加性教育必修课程。

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10、

Two groups of patients should rest in bed during the treatment period, not to have sex and to have adequate nutritional support.

两组患者在治疗期间均嘱卧床休息，禁止性生活，同时予以足够的营养支持。

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11、

From the cytogenetic perspective, only a small proportion of fish species have heteromorphic sex chromosomes.

几十年的细胞遗传学研究表明，鱼类性别决定几乎包括了动物的所有性染色体类型。

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12、

Scientists know how this happens, but not why.Chickens have two sex organs;

科学家们知道这一转变的发生过程，并不知道其背后的原因。鸡有两个性器官；

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13、

And have sex once every six weeks

每六个星期才做一次

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14、

But I'm not going to have sex with anybody.

但是我不打算和任何人上床。

provided by jukuu

15、

I can't believe they have sex selected semen.

我没想到选精子也要登记性别。

provided by jukuu

16、

analysis of results in the determination of resistance of 108 pseudomonas aures to antibiotics

108株铜绿假单胞菌的药敏结果分析

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17、

analysis of resistance of staphylococcus aures to antibiotics

金黄色葡萄球菌耐药性分析

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18、

the debate about the evaluation of uncertainty for inspection device of nonautomatic weighing instrument

非自动秤检定装置不确定度评定的讨论

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19、

however, existing nonautomatic storage table spaces will not automatically be converted.

但是，现有的非自动存储表空间不会自动转换。

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20、

stifel, nicolaus & co. similarly priced sina at $100 a share.

同样，Stifel和Nicolaus公司都将新浪股价定位每股100美元。

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